./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 0ed9222f 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 0.1.24-0ed9222-m [2019-01-13 21:56:05,037 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-13 21:56:05,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-13 21:56:05,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-13 21:56:05,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-13 21:56:05,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-13 21:56:05,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-13 21:56:05,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-13 21:56:05,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-13 21:56:05,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-13 21:56:05,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-13 21:56:05,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-13 21:56:05,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-13 21:56:05,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-13 21:56:05,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-13 21:56:05,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-13 21:56:05,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-13 21:56:05,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-13 21:56:05,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-13 21:56:05,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-13 21:56:05,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-13 21:56:05,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-13 21:56:05,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-13 21:56:05,076 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-13 21:56:05,076 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-13 21:56:05,077 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-13 21:56:05,078 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-13 21:56:05,079 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-13 21:56:05,080 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-13 21:56:05,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-13 21:56:05,082 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-13 21:56:05,082 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-13 21:56:05,083 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-13 21:56:05,083 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-13 21:56:05,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-13 21:56:05,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-13 21:56:05,086 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-13 21:56:05,108 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-13 21:56:05,110 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-13 21:56:05,112 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-13 21:56:05,112 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-13 21:56:05,112 INFO L133 SettingsManager]: * Use SBE=true [2019-01-13 21:56:05,112 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-13 21:56:05,112 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-13 21:56:05,113 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-13 21:56:05,117 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-13 21:56:05,117 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-13 21:56:05,117 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-13 21:56:05,117 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-13 21:56:05,117 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-13 21:56:05,118 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-13 21:56:05,119 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-13 21:56:05,119 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-13 21:56:05,119 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-13 21:56:05,119 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-13 21:56:05,119 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-13 21:56:05,119 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-13 21:56:05,120 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-13 21:56:05,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-13 21:56:05,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-13 21:56:05,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-13 21:56:05,122 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-13 21:56:05,123 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-13 21:56:05,123 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 [2019-01-13 21:56:05,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-13 21:56:05,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-13 21:56:05,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-13 21:56:05,205 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-13 21:56:05,205 INFO L276 PluginConnector]: CDTParser initialized [2019-01-13 21:56:05,206 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2019-01-13 21:56:05,260 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736dd1ce7/79d57fe1ba27468bb62359cf64d0fb14/FLAG94c9a3e1a [2019-01-13 21:56:05,739 INFO L307 CDTParser]: Found 1 translation units. [2019-01-13 21:56:05,740 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2019-01-13 21:56:05,752 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736dd1ce7/79d57fe1ba27468bb62359cf64d0fb14/FLAG94c9a3e1a [2019-01-13 21:56:06,034 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736dd1ce7/79d57fe1ba27468bb62359cf64d0fb14 [2019-01-13 21:56:06,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-13 21:56:06,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-13 21:56:06,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-13 21:56:06,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-13 21:56:06,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-13 21:56:06,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432cd164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06, skipping insertion in model container [2019-01-13 21:56:06,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-13 21:56:06,107 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-13 21:56:06,459 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 21:56:06,470 INFO L191 MainTranslator]: Completed pre-run [2019-01-13 21:56:06,611 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-13 21:56:06,663 INFO L195 MainTranslator]: Completed translation [2019-01-13 21:56:06,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06 WrapperNode [2019-01-13 21:56:06,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-13 21:56:06,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-13 21:56:06,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-13 21:56:06,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-13 21:56:06,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (1/1) ... [2019-01-13 21:56:06,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-13 21:56:06,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-13 21:56:06,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-13 21:56:06,724 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-13 21:56:06,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (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 [2019-01-13 21:56:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-13 21:56:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-13 21:56:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-01-13 21:56:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-01-13 21:56:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2019-01-13 21:56:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-13 21:56:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-01-13 21:56:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-01-13 21:56:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-01-13 21:56:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-01-13 21:56:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-01-13 21:56:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-01-13 21:56:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-01-13 21:56:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-01-13 21:56:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-01-13 21:56:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-01-13 21:56:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-01-13 21:56:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-01-13 21:56:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-01-13 21:56:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-01-13 21:56:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-01-13 21:56:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-01-13 21:56:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-01-13 21:56:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-01-13 21:56:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-01-13 21:56:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-01-13 21:56:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-01-13 21:56:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-01-13 21:56:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-01-13 21:56:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-01-13 21:56:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-01-13 21:56:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-01-13 21:56:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-01-13 21:56:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-01-13 21:56:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-01-13 21:56:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-01-13 21:56:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-01-13 21:56:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-01-13 21:56:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-01-13 21:56:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-01-13 21:56:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-01-13 21:56:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-01-13 21:56:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-01-13 21:56:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-01-13 21:56:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-01-13 21:56:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-01-13 21:56:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-01-13 21:56:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-01-13 21:56:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-01-13 21:56:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-01-13 21:56:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-01-13 21:56:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-01-13 21:56:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-01-13 21:56:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-01-13 21:56:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-01-13 21:56:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-01-13 21:56:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-01-13 21:56:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-01-13 21:56:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-01-13 21:56:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-13 21:56:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-13 21:56:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-13 21:56:07,452 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-13 21:56:07,452 INFO L286 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-13 21:56:07,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:56:07 BoogieIcfgContainer [2019-01-13 21:56:07,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-13 21:56:07,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-13 21:56:07,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-13 21:56:07,459 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-13 21:56:07,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.01 09:56:06" (1/3) ... [2019-01-13 21:56:07,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eec9b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 09:56:07, skipping insertion in model container [2019-01-13 21:56:07,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.01 09:56:06" (2/3) ... [2019-01-13 21:56:07,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eec9b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.01 09:56:07, skipping insertion in model container [2019-01-13 21:56:07,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:56:07" (3/3) ... [2019-01-13 21:56:07,464 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca_true-valid-memsafety_true-termination.i [2019-01-13 21:56:07,474 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-13 21:56:07,482 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-01-13 21:56:07,498 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-01-13 21:56:07,529 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-13 21:56:07,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-13 21:56:07,530 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-13 21:56:07,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-13 21:56:07,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-13 21:56:07,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-13 21:56:07,532 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-13 21:56:07,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-13 21:56:07,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-13 21:56:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-01-13 21:56:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-13 21:56:07,555 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:07,556 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:07,559 INFO L423 AbstractCegarLoop]: === Iteration 1 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:07,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash -179147167, now seen corresponding path program 1 times [2019-01-13 21:56:07,569 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:07,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:07,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:07,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:07,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:07,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:07,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:56:07,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 21:56:07,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 21:56:07,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:56:07,850 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2019-01-13 21:56:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:08,029 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-01-13 21:56:08,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-13 21:56:08,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-01-13 21:56:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:08,042 INFO L225 Difference]: With dead ends: 35 [2019-01-13 21:56:08,042 INFO L226 Difference]: Without dead ends: 32 [2019-01-13 21:56:08,044 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 [2019-01-13 21:56:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-01-13 21:56:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-01-13 21:56:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-01-13 21:56:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-01-13 21:56:08,083 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 14 [2019-01-13 21:56:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:08,083 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-01-13 21:56:08,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 21:56:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-01-13 21:56:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-13 21:56:08,084 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:08,084 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:08,085 INFO L423 AbstractCegarLoop]: === Iteration 2 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash -179147166, now seen corresponding path program 1 times [2019-01-13 21:56:08,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:08,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:08,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:08,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:08,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:08,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:08,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-13 21:56:08,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-13 21:56:08,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-13 21:56:08,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-13 21:56:08,466 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2019-01-13 21:56:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:08,928 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-01-13 21:56:08,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-13 21:56:08,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-01-13 21:56:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:08,932 INFO L225 Difference]: With dead ends: 48 [2019-01-13 21:56:08,932 INFO L226 Difference]: Without dead ends: 48 [2019-01-13 21:56:08,933 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-01-13 21:56:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-01-13 21:56:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2019-01-13 21:56:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-01-13 21:56:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-01-13 21:56:08,940 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 14 [2019-01-13 21:56:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:08,941 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-01-13 21:56:08,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-13 21:56:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2019-01-13 21:56:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-13 21:56:08,942 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:08,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:08,943 INFO L423 AbstractCegarLoop]: === Iteration 3 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:08,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594887, now seen corresponding path program 1 times [2019-01-13 21:56:08,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:08,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:08,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:08,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:08,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:09,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:09,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:56:09,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 21:56:09,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 21:56:09,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:56:09,035 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2019-01-13 21:56:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:09,146 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2019-01-13 21:56:09,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-13 21:56:09,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-01-13 21:56:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:09,150 INFO L225 Difference]: With dead ends: 38 [2019-01-13 21:56:09,150 INFO L226 Difference]: Without dead ends: 38 [2019-01-13 21:56:09,151 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 [2019-01-13 21:56:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-01-13 21:56:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-01-13 21:56:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-01-13 21:56:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2019-01-13 21:56:09,156 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 15 [2019-01-13 21:56:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:09,157 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2019-01-13 21:56:09,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 21:56:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2019-01-13 21:56:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-01-13 21:56:09,158 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:09,158 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:09,158 INFO L423 AbstractCegarLoop]: === Iteration 4 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:09,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1258594886, now seen corresponding path program 1 times [2019-01-13 21:56:09,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:09,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:09,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:09,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:09,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:09,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-13 21:56:09,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-01-13 21:56:09,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-01-13 21:56:09,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-01-13 21:56:09,357 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2019-01-13 21:56:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:09,672 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2019-01-13 21:56:09,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-13 21:56:09,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-01-13 21:56:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:09,674 INFO L225 Difference]: With dead ends: 60 [2019-01-13 21:56:09,674 INFO L226 Difference]: Without dead ends: 60 [2019-01-13 21:56:09,675 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 [2019-01-13 21:56:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-01-13 21:56:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2019-01-13 21:56:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-01-13 21:56:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2019-01-13 21:56:09,683 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2019-01-13 21:56:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:09,684 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2019-01-13 21:56:09,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-01-13 21:56:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2019-01-13 21:56:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 21:56:09,685 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:09,686 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:09,686 INFO L423 AbstractCegarLoop]: === Iteration 5 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:09,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:09,686 INFO L82 PathProgramCache]: Analyzing trace with hash -362541574, now seen corresponding path program 1 times [2019-01-13 21:56:09,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:09,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:09,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:09,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:09,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:09,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-13 21:56:09,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 21:56:09,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 21:56:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:56:09,754 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand 5 states. [2019-01-13 21:56:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:09,837 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2019-01-13 21:56:09,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-13 21:56:09,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-01-13 21:56:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:09,840 INFO L225 Difference]: With dead ends: 54 [2019-01-13 21:56:09,840 INFO L226 Difference]: Without dead ends: 52 [2019-01-13 21:56:09,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-13 21:56:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-01-13 21:56:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2019-01-13 21:56:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-01-13 21:56:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2019-01-13 21:56:09,847 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 16 [2019-01-13 21:56:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:09,848 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2019-01-13 21:56:09,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 21:56:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2019-01-13 21:56:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 21:56:09,849 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:09,849 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:09,849 INFO L423 AbstractCegarLoop]: === Iteration 6 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -361778601, now seen corresponding path program 1 times [2019-01-13 21:56:09,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:09,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:09,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:09,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:09,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:09,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:56:09,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-13 21:56:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-13 21:56:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-13 21:56:09,913 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 5 states. [2019-01-13 21:56:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:09,984 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2019-01-13 21:56:09,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-13 21:56:09,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-01-13 21:56:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:09,986 INFO L225 Difference]: With dead ends: 45 [2019-01-13 21:56:09,986 INFO L226 Difference]: Without dead ends: 45 [2019-01-13 21:56:09,987 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 [2019-01-13 21:56:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-01-13 21:56:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-01-13 21:56:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-01-13 21:56:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2019-01-13 21:56:09,994 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 16 [2019-01-13 21:56:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:09,994 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2019-01-13 21:56:09,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-13 21:56:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2019-01-13 21:56:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-13 21:56:09,995 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:09,995 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:09,996 INFO L423 AbstractCegarLoop]: === Iteration 7 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:09,996 INFO L82 PathProgramCache]: Analyzing trace with hash -361778600, now seen corresponding path program 1 times [2019-01-13 21:56:09,996 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:09,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:09,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:09,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:09,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:10,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:10,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-13 21:56:10,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-13 21:56:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-13 21:56:10,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-01-13 21:56:10,226 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 6 states. [2019-01-13 21:56:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:10,301 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2019-01-13 21:56:10,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-13 21:56:10,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-01-13 21:56:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:10,305 INFO L225 Difference]: With dead ends: 54 [2019-01-13 21:56:10,306 INFO L226 Difference]: Without dead ends: 54 [2019-01-13 21:56:10,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-01-13 21:56:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-01-13 21:56:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2019-01-13 21:56:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-01-13 21:56:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2019-01-13 21:56:10,313 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 16 [2019-01-13 21:56:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:10,314 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2019-01-13 21:56:10,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-13 21:56:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2019-01-13 21:56:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-13 21:56:10,315 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:10,316 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:10,316 INFO L423 AbstractCegarLoop]: === Iteration 8 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash -399235342, now seen corresponding path program 1 times [2019-01-13 21:56:10,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:10,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:10,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:10,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:10,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:10,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-13 21:56:10,495 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 [2019-01-13 21:56:10,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:10,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 21:56:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:10,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-13 21:56:10,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2019-01-13 21:56:10,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-01-13 21:56:10,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-01-13 21:56:10,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-01-13 21:56:10,693 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand 12 states. [2019-01-13 21:56:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:11,096 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2019-01-13 21:56:11,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-13 21:56:11,097 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-01-13 21:56:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:11,098 INFO L225 Difference]: With dead ends: 91 [2019-01-13 21:56:11,098 INFO L226 Difference]: Without dead ends: 91 [2019-01-13 21:56:11,099 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2019-01-13 21:56:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-01-13 21:56:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2019-01-13 21:56:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-01-13 21:56:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2019-01-13 21:56:11,108 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 19 [2019-01-13 21:56:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:11,109 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2019-01-13 21:56:11,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-01-13 21:56:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2019-01-13 21:56:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-01-13 21:56:11,111 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:11,111 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-13 21:56:11,111 INFO L423 AbstractCegarLoop]: === Iteration 9 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash -141069904, now seen corresponding path program 1 times [2019-01-13 21:56:11,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:11,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:11,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:11,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:11,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:11,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-13 21:56:11,342 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 [2019-01-13 21:56:11,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:11,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 21:56:11,558 WARN L181 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-01-13 21:56:11,609 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:11,617 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 [2019-01-13 21:56:11,741 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:11,744 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:11,745 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 [2019-01-13 21:56:11,747 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-13 21:56:11,801 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:11,820 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 [2019-01-13 21:56:11,829 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 [2019-01-13 21:56:11,848 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 [2019-01-13 21:56:11,848 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-13 21:56:11,867 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:11,879 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:11,899 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. [2019-01-13 21:56:11,900 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2019-01-13 21:56:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:12,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-13 21:56:12,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2019-01-13 21:56:12,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-01-13 21:56:12,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-01-13 21:56:12,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-01-13 21:56:12,369 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand 14 states. [2019-01-13 21:56:13,087 WARN L181 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-13 21:56:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:13,273 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2019-01-13 21:56:13,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-01-13 21:56:13,274 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2019-01-13 21:56:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:13,276 INFO L225 Difference]: With dead ends: 109 [2019-01-13 21:56:13,276 INFO L226 Difference]: Without dead ends: 109 [2019-01-13 21:56:13,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-01-13 21:56:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-01-13 21:56:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2019-01-13 21:56:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-01-13 21:56:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2019-01-13 21:56:13,286 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 19 [2019-01-13 21:56:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:13,286 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2019-01-13 21:56:13,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-01-13 21:56:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2019-01-13 21:56:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-13 21:56:13,287 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:13,287 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] [2019-01-13 21:56:13,290 INFO L423 AbstractCegarLoop]: === Iteration 10 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:13,290 INFO L82 PathProgramCache]: Analyzing trace with hash 506716446, now seen corresponding path program 1 times [2019-01-13 21:56:13,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:13,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:13,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:13,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:13,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:13,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-13 21:56:13,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-13 21:56:13,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-13 21:56:13,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-13 21:56:13,415 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand 4 states. [2019-01-13 21:56:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:13,442 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2019-01-13 21:56:13,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-13 21:56:13,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-01-13 21:56:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:13,444 INFO L225 Difference]: With dead ends: 86 [2019-01-13 21:56:13,444 INFO L226 Difference]: Without dead ends: 86 [2019-01-13 21:56:13,444 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-13 21:56:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-01-13 21:56:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2019-01-13 21:56:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-01-13 21:56:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2019-01-13 21:56:13,451 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 20 [2019-01-13 21:56:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:13,451 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2019-01-13 21:56:13,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-13 21:56:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2019-01-13 21:56:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-01-13 21:56:13,453 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:13,454 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] [2019-01-13 21:56:13,454 INFO L423 AbstractCegarLoop]: === Iteration 11 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash 508563488, now seen corresponding path program 1 times [2019-01-13 21:56:13,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:13,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:13,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:13,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-13 21:56:13,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:13,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-13 21:56:13,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-13 21:56:13,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-13 21:56:13,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-01-13 21:56:13,586 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2019-01-13 21:56:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:13,661 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2019-01-13 21:56:13,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-13 21:56:13,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-01-13 21:56:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:13,664 INFO L225 Difference]: With dead ends: 98 [2019-01-13 21:56:13,664 INFO L226 Difference]: Without dead ends: 98 [2019-01-13 21:56:13,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-01-13 21:56:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-01-13 21:56:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2019-01-13 21:56:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-01-13 21:56:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2019-01-13 21:56:13,671 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 20 [2019-01-13 21:56:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:13,673 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2019-01-13 21:56:13,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-13 21:56:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2019-01-13 21:56:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-13 21:56:13,675 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:13,675 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] [2019-01-13 21:56:13,675 INFO L423 AbstractCegarLoop]: === Iteration 12 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:13,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1631778687, now seen corresponding path program 1 times [2019-01-13 21:56:13,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:13,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:13,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:13,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:13,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-13 21:56:13,799 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 [2019-01-13 21:56:13,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:13,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 21:56:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-13 21:56:13,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-01-13 21:56:13,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2019-01-13 21:56:13,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-01-13 21:56:13,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-01-13 21:56:13,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-01-13 21:56:13,968 INFO L87 Difference]: Start difference. First operand 90 states and 117 transitions. Second operand 11 states. [2019-01-13 21:56:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:14,104 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2019-01-13 21:56:14,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-01-13 21:56:14,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-01-13 21:56:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:14,106 INFO L225 Difference]: With dead ends: 136 [2019-01-13 21:56:14,106 INFO L226 Difference]: Without dead ends: 136 [2019-01-13 21:56:14,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2019-01-13 21:56:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-01-13 21:56:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2019-01-13 21:56:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-01-13 21:56:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 162 transitions. [2019-01-13 21:56:14,116 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 162 transitions. Word has length 22 [2019-01-13 21:56:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:14,116 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 162 transitions. [2019-01-13 21:56:14,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-01-13 21:56:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 162 transitions. [2019-01-13 21:56:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-01-13 21:56:14,119 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:14,120 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] [2019-01-13 21:56:14,120 INFO L423 AbstractCegarLoop]: === Iteration 13 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 610710333, now seen corresponding path program 1 times [2019-01-13 21:56:14,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:14,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:14,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:14,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:14,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:14,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-13 21:56:14,509 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 [2019-01-13 21:56:14,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:14,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 21:56:14,679 WARN L181 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-01-13 21:56:14,695 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:14,696 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 [2019-01-13 21:56:14,720 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:14,722 INFO L701 Elim1Store]: detected not equals via solver [2019-01-13 21:56:14,723 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 [2019-01-13 21:56:14,724 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-01-13 21:56:14,785 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:14,799 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 [2019-01-13 21:56:14,804 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 [2019-01-13 21:56:14,813 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 [2019-01-13 21:56:14,813 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-01-13 21:56:14,826 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:14,833 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-01-13 21:56:14,849 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. [2019-01-13 21:56:14,850 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2019-01-13 21:56:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-13 21:56:15,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-13 21:56:15,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2019-01-13 21:56:15,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-01-13 21:56:15,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-01-13 21:56:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-01-13 21:56:15,366 INFO L87 Difference]: Start difference. First operand 129 states and 162 transitions. Second operand 15 states. [2019-01-13 21:56:15,991 WARN L181 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-01-13 21:56:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:16,043 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2019-01-13 21:56:16,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-01-13 21:56:16,044 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-01-13 21:56:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:16,046 INFO L225 Difference]: With dead ends: 161 [2019-01-13 21:56:16,046 INFO L226 Difference]: Without dead ends: 161 [2019-01-13 21:56:16,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2019-01-13 21:56:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-01-13 21:56:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 113. [2019-01-13 21:56:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-01-13 21:56:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2019-01-13 21:56:16,054 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 22 [2019-01-13 21:56:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:16,054 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2019-01-13 21:56:16,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-01-13 21:56:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2019-01-13 21:56:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-01-13 21:56:16,057 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:16,058 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] [2019-01-13 21:56:16,058 INFO L423 AbstractCegarLoop]: === Iteration 14 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:16,058 INFO L82 PathProgramCache]: Analyzing trace with hash 475448279, now seen corresponding path program 1 times [2019-01-13 21:56:16,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:16,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:16,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:16,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:16,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:16,317 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2019-01-13 21:56:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-13 21:56:16,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-13 21:56:16,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-13 21:56:16,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-13 21:56:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-13 21:56:16,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-01-13 21:56:16,339 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand 6 states. [2019-01-13 21:56:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:16,476 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2019-01-13 21:56:16,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-13 21:56:16,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-01-13 21:56:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:16,478 INFO L225 Difference]: With dead ends: 128 [2019-01-13 21:56:16,478 INFO L226 Difference]: Without dead ends: 71 [2019-01-13 21:56:16,479 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 [2019-01-13 21:56:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-01-13 21:56:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2019-01-13 21:56:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-01-13 21:56:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2019-01-13 21:56:16,482 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 24 [2019-01-13 21:56:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:16,482 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2019-01-13 21:56:16,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-13 21:56:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2019-01-13 21:56:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-01-13 21:56:16,488 INFO L394 BasicCegarLoop]: Found error trace [2019-01-13 21:56:16,488 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] [2019-01-13 21:56:16,489 INFO L423 AbstractCegarLoop]: === Iteration 15 === [diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr2REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-01-13 21:56:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-13 21:56:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash -979957108, now seen corresponding path program 1 times [2019-01-13 21:56:16,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-13 21:56:16,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-13 21:56:16,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:16,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:16,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-13 21:56:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-01-13 21:56:16,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-01-13 21:56:16,862 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 [2019-01-13 21:56:16,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-13 21:56:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-13 21:56:16,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-13 21:56:16,912 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 [2019-01-13 21:56:16,931 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 [2019-01-13 21:56:16,946 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 [2019-01-13 21:56:16,948 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2019-01-13 21:56:17,013 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 [2019-01-13 21:56:17,015 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2019-01-13 21:56:17,062 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2019-01-13 21:56:17,096 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2019-01-13 21:56:17,131 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. [2019-01-13 21:56:17,132 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:22, output treesize:62 [2019-01-13 21:56:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-01-13 21:56:17,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-01-13 21:56:17,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2019-01-13 21:56:17,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-01-13 21:56:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-01-13 21:56:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2019-01-13 21:56:17,396 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 16 states. [2019-01-13 21:56:18,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-13 21:56:18,133 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2019-01-13 21:56:18,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-01-13 21:56:18,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-01-13 21:56:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-13 21:56:18,135 INFO L225 Difference]: With dead ends: 100 [2019-01-13 21:56:18,135 INFO L226 Difference]: Without dead ends: 0 [2019-01-13 21:56:18,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2019-01-13 21:56:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-13 21:56:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-13 21:56:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-13 21:56:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-13 21:56:18,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-01-13 21:56:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-13 21:56:18,138 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-13 21:56:18,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-01-13 21:56:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-13 21:56:18,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-13 21:56:18,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.01 09:56:18 BoogieIcfgContainer [2019-01-13 21:56:18,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-13 21:56:18,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-13 21:56:18,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-13 21:56:18,144 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-13 21:56:18,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.01 09:56:07" (3/4) ... [2019-01-13 21:56:18,147 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-13 21:56:18,153 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-01-13 21:56:18,153 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-01-13 21:56:18,153 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-01-13 21:56:18,153 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure diff [2019-01-13 21:56:18,154 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-01-13 21:56:18,158 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-01-13 21:56:18,158 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-01-13 21:56:18,159 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-13 21:56:18,207 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-13 21:56:18,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-13 21:56:18,208 INFO L168 Benchmark]: Toolchain (without parser) took 12171.20 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 288.4 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -295.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 21:56:18,210 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-01-13 21:56:18,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-01-13 21:56:18,211 INFO L168 Benchmark]: Boogie Preprocessor took 59.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 21:56:18,211 INFO L168 Benchmark]: RCFGBuilder took 730.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-01-13 21:56:18,213 INFO L168 Benchmark]: TraceAbstraction took 10687.80 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -218.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-13 21:56:18,214 INFO L168 Benchmark]: Witness Printer took 64.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2019-01-13 21:56:18,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 624.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -130.8 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.39 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 730.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10687.80 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 184.5 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -218.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 64.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 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, 10.6s OverallTime, 15 OverallIterations, 2 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 420 SDtfs, 1032 SDslu, 1256 SDs, 0 SdLazy, 898 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5.1s 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, 5.1s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 376 ConstructedInterpolants, 44 QuantifiedInterpolants, 74573 SizeOfPredicates, 40 NumberOfNonLiveVariables, 786 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...