./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.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 3e28603c63113c1566dc2e06da17c63059f80486 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:48:31,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:48:31,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:48:31,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:48:31,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:48:31,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:48:31,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:48:31,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:48:31,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:48:31,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:48:31,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:48:31,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:48:31,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:48:31,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:48:31,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:48:31,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:48:31,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:48:31,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:48:31,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:48:31,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:48:31,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:48:31,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:48:31,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:48:31,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:48:31,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:48:31,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:48:31,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:48:31,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:48:31,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:48:31,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:48:31,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:48:31,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:48:31,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:48:31,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:48:31,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:48:31,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:48:31,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:48:31,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:48:31,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:48:31,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:48:31,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:48:31,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:48:31,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:48:31,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:48:31,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:48:31,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:48:31,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:48:31,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:48:31,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:48:31,257 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:48:31,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:48:31,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:48:31,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:48:31,258 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:48:31,258 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:48:31,259 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:48:31,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:48:31,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:48:31,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:48:31,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:48:31,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:48:31,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:48:31,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:48:31,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:48:31,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:48:31,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:48:31,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:48:31,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:48:31,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:48:31,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:48:31,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-10-20 05:48:31,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:48:31,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:48:31,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:48:31,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:48:31,549 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:48:31,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-20 05:48:31,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2b68934/1c6571da41a2417f8e26d96ef55a6059/FLAG5ee25928f [2020-10-20 05:48:32,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:48:32,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-20 05:48:32,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2b68934/1c6571da41a2417f8e26d96ef55a6059/FLAG5ee25928f [2020-10-20 05:48:32,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e2b68934/1c6571da41a2417f8e26d96ef55a6059 [2020-10-20 05:48:32,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:48:32,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:48:32,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:32,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:48:32,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:48:32,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:32" (1/1) ... [2020-10-20 05:48:32,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58073e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:32, skipping insertion in model container [2020-10-20 05:48:32,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:32" (1/1) ... [2020-10-20 05:48:32,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:48:32,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:48:32,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:32,959 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:48:33,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:33,093 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:48:33,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33 WrapperNode [2020-10-20 05:48:33,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:33,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:48:33,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:48:33,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:48:33,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (1/1) ... [2020-10-20 05:48:33,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:48:33,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:48:33,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:48:33,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:48:33,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (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 [2020-10-20 05:48:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:48:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:48:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:48:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:48:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:48:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:48:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:48:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:48:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:48:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:48:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:48:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:48:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:48:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:48:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:48:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:48:33,225 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:48:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:48:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:48:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:48:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:48:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:48:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:48:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:48:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:48:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:48:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:48:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:48:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:48:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:48:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:48:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:48:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:48:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:48:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:48:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:48:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:48:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:48:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:48:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:48:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:48:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:48:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:48:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:48:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:48:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:48:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:48:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:48:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:48:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:48:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:48:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:48:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:48:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:48:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:48:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:48:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:48:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:48:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:48:33,746 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:48:33,747 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 05:48:33,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:33 BoogieIcfgContainer [2020-10-20 05:48:33,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:48:33,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:48:33,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:48:33,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:48:33,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:48:32" (1/3) ... [2020-10-20 05:48:33,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288df65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:33, skipping insertion in model container [2020-10-20 05:48:33,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:33" (2/3) ... [2020-10-20 05:48:33,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288df65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:33, skipping insertion in model container [2020-10-20 05:48:33,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:33" (3/3) ... [2020-10-20 05:48:33,758 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2020-10-20 05:48:33,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:48:33,778 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-20 05:48:33,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-20 05:48:33,812 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:48:33,812 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:48:33,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:48:33,813 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:48:33,813 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:48:33,813 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:48:33,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:48:33,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:48:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-20 05:48:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:48:33,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:33,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:33,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2020-10-20 05:48:33,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:33,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123620218] [2020-10-20 05:48:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:34,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123620218] [2020-10-20 05:48:34,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:34,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:48:34,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535643688] [2020-10-20 05:48:34,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:48:34,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:48:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:48:34,099 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-20 05:48:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:34,320 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-20 05:48:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:48:34,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:48:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:34,337 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:48:34,337 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 05:48:34,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:48:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 05:48:34,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 05:48:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 05:48:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-20 05:48:34,387 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2020-10-20 05:48:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:34,388 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-20 05:48:34,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:48:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-20 05:48:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:48:34,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:34,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:34,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:48:34,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:34,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2020-10-20 05:48:34,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:34,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429436179] [2020-10-20 05:48:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:34,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429436179] [2020-10-20 05:48:34,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:34,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:48:34,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405842058] [2020-10-20 05:48:34,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:48:34,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:34,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:48:34,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:48:34,500 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-20 05:48:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:34,586 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-10-20 05:48:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:48:34,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 05:48:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:34,589 INFO L225 Difference]: With dead ends: 29 [2020-10-20 05:48:34,589 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 05:48:34,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:48:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 05:48:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 05:48:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 05:48:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-20 05:48:34,595 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2020-10-20 05:48:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:34,596 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-20 05:48:34,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:48:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-20 05:48:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:48:34,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:34,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:34,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:48:34,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2020-10-20 05:48:34,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:34,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103136337] [2020-10-20 05:48:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:34,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103136337] [2020-10-20 05:48:34,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:34,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:48:34,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360617748] [2020-10-20 05:48:34,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:48:34,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:48:34,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:48:34,688 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-20 05:48:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:34,815 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-20 05:48:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:48:34,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-20 05:48:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:34,817 INFO L225 Difference]: With dead ends: 33 [2020-10-20 05:48:34,818 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 05:48:34,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:48:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 05:48:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-20 05:48:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:48:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-20 05:48:34,824 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2020-10-20 05:48:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:34,825 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-20 05:48:34,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:48:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-20 05:48:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:48:34,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:34,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:34,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:48:34,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:34,828 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2020-10-20 05:48:34,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:34,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180529156] [2020-10-20 05:48:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180529156] [2020-10-20 05:48:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572956716] [2020-10-20 05:48:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:35,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:48:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:35,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:48:35,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-20 05:48:35,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259238292] [2020-10-20 05:48:35,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:48:35,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:48:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:35,103 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-10-20 05:48:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:35,159 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-20 05:48:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:48:35,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 05:48:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:35,161 INFO L225 Difference]: With dead ends: 54 [2020-10-20 05:48:35,161 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:48:35,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:48:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-20 05:48:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:48:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-20 05:48:35,168 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2020-10-20 05:48:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:35,169 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-20 05:48:35,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:48:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-20 05:48:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:48:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:35,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:35,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:35,387 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2020-10-20 05:48:35,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:35,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970703860] [2020-10-20 05:48:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:35,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970703860] [2020-10-20 05:48:35,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411940203] [2020-10-20 05:48:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:48:35,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:35,709 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:48:35,709 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:35,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:35,718 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:35,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-20 05:48:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:35,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:35,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-10-20 05:48:35,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772322404] [2020-10-20 05:48:35,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:48:35,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:35,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:48:35,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:48:35,774 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-20 05:48:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:35,920 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-20 05:48:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:48:35,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-20 05:48:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:35,921 INFO L225 Difference]: With dead ends: 39 [2020-10-20 05:48:35,922 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 05:48:35,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:48:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 05:48:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-20 05:48:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:48:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-20 05:48:35,927 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2020-10-20 05:48:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:35,928 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-20 05:48:35,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:48:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-20 05:48:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:48:35,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:35,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:36,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:36,141 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2020-10-20 05:48:36,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:36,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46637635] [2020-10-20 05:48:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46637635] [2020-10-20 05:48:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521796429] [2020-10-20 05:48:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:36,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:48:36,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:36,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:36,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-10-20 05:48:36,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483733302] [2020-10-20 05:48:36,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:48:36,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:36,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:48:36,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:48:36,374 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 11 states. [2020-10-20 05:48:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:36,557 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-10-20 05:48:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:48:36,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-20 05:48:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:36,559 INFO L225 Difference]: With dead ends: 50 [2020-10-20 05:48:36,559 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 05:48:36,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:48:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 05:48:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-20 05:48:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:48:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-20 05:48:36,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2020-10-20 05:48:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:36,566 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-20 05:48:36,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:48:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-20 05:48:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:48:36,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:36,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:36,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:36,779 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2020-10-20 05:48:36,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:36,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986417059] [2020-10-20 05:48:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:36,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986417059] [2020-10-20 05:48:36,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:36,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:48:36,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720046589] [2020-10-20 05:48:36,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:48:36,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:48:36,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:48:36,839 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-20 05:48:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:36,934 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-20 05:48:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:48:36,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 05:48:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:36,935 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:48:36,936 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:48:36,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:48:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:48:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-20 05:48:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:48:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-20 05:48:36,945 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2020-10-20 05:48:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-20 05:48:36,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:48:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-20 05:48:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:48:36,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:36,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:36,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:48:36,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2020-10-20 05:48:36,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:36,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63906474] [2020-10-20 05:48:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:37,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63906474] [2020-10-20 05:48:37,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251668582] [2020-10-20 05:48:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:48:37,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:37,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:48:37,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-20 05:48:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865079325] [2020-10-20 05:48:37,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:48:37,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:48:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:37,186 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-10-20 05:48:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:37,224 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-20 05:48:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:48:37,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 05:48:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:37,226 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:48:37,226 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 05:48:37,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 05:48:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-20 05:48:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 05:48:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-20 05:48:37,232 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2020-10-20 05:48:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:37,232 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-20 05:48:37,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:48:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-20 05:48:37,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:48:37,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:37,234 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:37,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:37,446 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:37,446 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2020-10-20 05:48:37,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:37,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122684941] [2020-10-20 05:48:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122684941] [2020-10-20 05:48:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994363371] [2020-10-20 05:48:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:37,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:48:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:37,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:37,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-20 05:48:37,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111497218] [2020-10-20 05:48:37,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:48:37,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:37,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:48:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:48:37,674 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 11 states. [2020-10-20 05:48:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:37,857 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-20 05:48:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:48:37,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-20 05:48:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:37,859 INFO L225 Difference]: With dead ends: 73 [2020-10-20 05:48:37,859 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 05:48:37,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:48:37,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 05:48:37,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2020-10-20 05:48:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 05:48:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-20 05:48:37,865 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 21 [2020-10-20 05:48:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:37,866 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-20 05:48:37,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:48:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-20 05:48:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:48:37,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:37,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:38,068 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2020-10-20 05:48:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:38,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118945761] [2020-10-20 05:48:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:38,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:48:38,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118945761] [2020-10-20 05:48:38,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:38,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:48:38,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977381032] [2020-10-20 05:48:38,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:48:38,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:48:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:48:38,133 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 5 states. [2020-10-20 05:48:38,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:38,156 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-20 05:48:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:48:38,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 05:48:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:38,158 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:48:38,158 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 05:48:38,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:48:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 05:48:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 05:48:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:48:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-20 05:48:38,162 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 22 [2020-10-20 05:48:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:38,162 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-20 05:48:38,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:48:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-20 05:48:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:48:38,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:38,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:38,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:48:38,164 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 05:48:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1009154207, now seen corresponding path program 2 times [2020-10-20 05:48:38,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:48:38,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400205530] [2020-10-20 05:48:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:48:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:48:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:38,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400205530] [2020-10-20 05:48:38,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891729921] [2020-10-20 05:48:38,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:38,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:48:38,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:48:38,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:48:38,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:38,387 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:48:38,387 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:38,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:38,393 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:38,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-20 05:48:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:48:38,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:38,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2020-10-20 05:48:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579438374] [2020-10-20 05:48:38,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 05:48:38,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:48:38,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 05:48:38,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-20 05:48:38,481 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2020-10-20 05:48:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:38,770 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-10-20 05:48:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:48:38,770 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-20 05:48:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:38,771 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:48:38,771 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:48:38,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:48:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:48:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:48:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:48:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:48:38,772 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-20 05:48:38,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:38,772 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:48:38,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 05:48:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:48:38,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:48:38,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:38,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:48:38 BoogieIcfgContainer [2020-10-20 05:48:38,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:48:38,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:48:38,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:48:38,984 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:48:38,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:33" (3/4) ... [2020-10-20 05:48:38,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:48:38,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:48:38,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:48:38,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:48:38,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:48:38,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:48:38,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:48:38,998 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:48:39,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 05:48:39,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-20 05:48:39,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:48:39,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:48:39,056 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:48:39,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:48:39,059 INFO L168 Benchmark]: Toolchain (without parser) took 6545.17 ms. Allocated memory was 35.1 MB in the beginning and 76.0 MB in the end (delta: 40.9 MB). Free memory was 11.0 MB in the beginning and 25.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,060 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 33.0 MB. Free memory was 16.8 MB in the beginning and 16.8 MB in the end (delta: 34.8 kB). Peak memory consumption was 34.8 kB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.57 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 10.1 MB in the beginning and 24.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,061 INFO L168 Benchmark]: Boogie Preprocessor took 57.53 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 22.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,062 INFO L168 Benchmark]: RCFGBuilder took 595.80 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 15.9 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,063 INFO L168 Benchmark]: TraceAbstraction took 5232.71 ms. Allocated memory was 48.2 MB in the beginning and 76.0 MB in the end (delta: 27.8 MB). Free memory was 15.2 MB in the beginning and 29.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,063 INFO L168 Benchmark]: Witness Printer took 73.62 ms. Allocated memory is still 76.0 MB. Free memory was 29.4 MB in the beginning and 25.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:39,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 33.0 MB. Free memory was 16.8 MB in the beginning and 16.8 MB in the end (delta: 34.8 kB). Peak memory consumption was 34.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 576.57 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 10.1 MB in the beginning and 24.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 57.53 ms. Allocated memory is still 46.1 MB. Free memory was 24.6 MB in the beginning and 22.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 595.80 ms. Allocated memory was 46.1 MB in the beginning and 48.2 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 15.9 MB in the end (delta: 6.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5232.71 ms. Allocated memory was 48.2 MB in the beginning and 76.0 MB in the end (delta: 27.8 MB). Free memory was 15.2 MB in the beginning and 29.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * Witness Printer took 73.62 ms. Allocated memory is still 76.0 MB. Free memory was 29.4 MB in the beginning and 25.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: 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 8 procedures, 51 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 567 SDslu, 425 SDs, 0 SdLazy, 782 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 28335 SizeOfPredicates, 15 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 24/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...