./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 54858612 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_1.5.800.v20200727-1323.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 0.2.0-5485861 [2020-10-26 03:24:10,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:24:10,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:24:10,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:24:10,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:24:10,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:24:10,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:24:10,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:24:10,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:24:10,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:24:10,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:24:10,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:24:10,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:24:10,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:24:10,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:24:10,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:24:10,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:24:10,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:24:10,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:24:10,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:24:10,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:24:10,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:24:10,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:24:10,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:24:10,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:24:10,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:24:10,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:24:10,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:24:10,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:24:10,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:24:10,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:24:10,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:24:10,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:24:10,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:24:10,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:24:10,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:24:10,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:24:10,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:24:10,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:24:10,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:24:10,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:24:10,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:24:11,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:24:11,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:24:11,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:24:11,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:24:11,008 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:24:11,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:24:11,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:24:11,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:24:11,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:24:11,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:24:11,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:24:11,010 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:24:11,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:24:11,011 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:24:11,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:24:11,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:24:11,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:24:11,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:24:11,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:24:11,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:24:11,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:24:11,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:24:11,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:24:11,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:24:11,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:24:11,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:24:11,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:24:11,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:24:11,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-10-26 03:24:11,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:24:11,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:24:11,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:24:11,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:24:11,502 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:24:11,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-26 03:24:11,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b47206ad/922401a6edbf4106988f95f984576b83/FLAGd9111de6e [2020-10-26 03:24:12,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:24:12,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-26 03:24:12,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b47206ad/922401a6edbf4106988f95f984576b83/FLAGd9111de6e [2020-10-26 03:24:12,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b47206ad/922401a6edbf4106988f95f984576b83 [2020-10-26 03:24:12,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:24:12,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:24:12,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:24:12,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:24:12,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:24:12,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:24:12" (1/1) ... [2020-10-26 03:24:12,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa3da7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:12, skipping insertion in model container [2020-10-26 03:24:12,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:24:12" (1/1) ... [2020-10-26 03:24:12,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:24:12,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:24:13,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:24:13,094 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:24:13,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:24:13,228 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:24:13,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13 WrapperNode [2020-10-26 03:24:13,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:24:13,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:24:13,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:24:13,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:24:13,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (1/1) ... [2020-10-26 03:24:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:24:13,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:24:13,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:24:13,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:24:13,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (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 [2020-10-26 03:24:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:24:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:24:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:24:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:24:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:24:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:24:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:24:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:24:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:24:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:24:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:24:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:24:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:24:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:24:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:24:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:24:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:24:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:24:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:24:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:24:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:24:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:24:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:24:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:24:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:24:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:24:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:24:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:24:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:24:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:24:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:24:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:24:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:24:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:24:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:24:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:24:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:24:13,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:24:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:24:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:24:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:24:13,394 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:24:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:24:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:24:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:24:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:24:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:24:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:24:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:24:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:24:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:24:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:24:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:24:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:24:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:24:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:24:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:24:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:24:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:24:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:24:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:24:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:24:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:24:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:24:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:24:13,400 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:24:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:24:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:24:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:24:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:24:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:24:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:24:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:24:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:24:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:24:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:24:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:24:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:24:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:24:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:24:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:24:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:24:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:24:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:24:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:24:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:24:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:24:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:24:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:24:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:24:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:24:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:24:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:24:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:24:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:24:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:24:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:24:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:24:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:24:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:24:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:24:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:24:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:24:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:24:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:24:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:24:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:24:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:24:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:24:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:24:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:24:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:24:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:24:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:24:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:24:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:24:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:24:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:24:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:24:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:24:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:24:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:24:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:24:14,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:24:14,017 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:24:14,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:14 BoogieIcfgContainer [2020-10-26 03:24:14,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:24:14,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:24:14,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:24:14,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:24:14,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:24:12" (1/3) ... [2020-10-26 03:24:14,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691ab473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:24:14, skipping insertion in model container [2020-10-26 03:24:14,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:24:13" (2/3) ... [2020-10-26 03:24:14,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691ab473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:24:14, skipping insertion in model container [2020-10-26 03:24:14,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:14" (3/3) ... [2020-10-26 03:24:14,038 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2020-10-26 03:24:14,051 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:24:14,058 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-26 03:24:14,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-26 03:24:14,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:24:14,112 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:24:14,112 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:24:14,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:24:14,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:24:14,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:24:14,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:24:14,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:24:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-26 03:24:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:24:14,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:14,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:14,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2020-10-26 03:24:14,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361890683] [2020-10-26 03:24:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:14,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361890683] [2020-10-26 03:24:14,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:24:14,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:24:14,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580053236] [2020-10-26 03:24:14,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:24:14,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:24:14,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:24:14,415 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-26 03:24:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:14,544 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-26 03:24:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:24:14,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:24:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:14,556 INFO L225 Difference]: With dead ends: 36 [2020-10-26 03:24:14,557 INFO L226 Difference]: Without dead ends: 33 [2020-10-26 03:24:14,559 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 [2020-10-26 03:24:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-26 03:24:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-26 03:24:14,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 03:24:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 03:24:14,608 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2020-10-26 03:24:14,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:14,609 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 03:24:14,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:24:14,609 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 03:24:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:24:14,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:14,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:14,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:24:14,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:14,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2020-10-26 03:24:14,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:14,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494461654] [2020-10-26 03:24:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:14,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494461654] [2020-10-26 03:24:14,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:24:14,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:24:14,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979364013] [2020-10-26 03:24:14,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:24:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:14,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:24:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:24:14,716 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-26 03:24:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:14,812 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-10-26 03:24:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:24:14,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 03:24:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:14,814 INFO L225 Difference]: With dead ends: 29 [2020-10-26 03:24:14,814 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 03:24:14,815 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 [2020-10-26 03:24:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 03:24:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 03:24:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 03:24:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-26 03:24:14,821 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2020-10-26 03:24:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:14,821 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-26 03:24:14,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:24:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-26 03:24:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:24:14,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:14,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:14,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:24:14,823 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:14,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2020-10-26 03:24:14,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:14,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73994930] [2020-10-26 03:24:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:14,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73994930] [2020-10-26 03:24:14,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:24:14,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:24:14,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371919463] [2020-10-26 03:24:14,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:24:14,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:24:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:24:14,992 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-26 03:24:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:15,149 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-26 03:24:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:24:15,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-26 03:24:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:15,151 INFO L225 Difference]: With dead ends: 33 [2020-10-26 03:24:15,151 INFO L226 Difference]: Without dead ends: 33 [2020-10-26 03:24:15,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:24:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-26 03:24:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-26 03:24:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 03:24:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-26 03:24:15,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2020-10-26 03:24:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:15,158 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-26 03:24:15,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:24:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-26 03:24:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:24:15,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:15,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:15,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:24:15,160 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2020-10-26 03:24:15,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:15,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412400941] [2020-10-26 03:24:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:15,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412400941] [2020-10-26 03:24:15,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40309650] [2020-10-26 03:24:15,275 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 [2020-10-26 03:24:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:15,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:24:15,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:15,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:24:15,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-26 03:24:15,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905510251] [2020-10-26 03:24:15,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:24:15,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:15,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:24:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:24:15,497 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-10-26 03:24:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:15,559 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-26 03:24:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:24:15,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 03:24:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:15,562 INFO L225 Difference]: With dead ends: 54 [2020-10-26 03:24:15,562 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 03:24:15,563 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 [2020-10-26 03:24:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 03:24:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-26 03:24:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 03:24:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-26 03:24:15,571 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2020-10-26 03:24:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:15,571 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-26 03:24:15,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:24:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-26 03:24:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:24:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:15,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:15,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:15,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:15,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:15,788 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2020-10-26 03:24:15,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:15,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423138104] [2020-10-26 03:24:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:15,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423138104] [2020-10-26 03:24:15,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138857406] [2020-10-26 03:24:15,926 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 [2020-10-26 03:24:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:16,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:24:16,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:16,090 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 [2020-10-26 03:24:16,091 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:24:16,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:24:16,101 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:24:16,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-26 03:24:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:16,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:24:16,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-10-26 03:24:16,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038384488] [2020-10-26 03:24:16,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:24:16,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:16,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:24:16,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:24:16,159 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-26 03:24:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:16,328 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-26 03:24:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:24:16,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-26 03:24:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:16,330 INFO L225 Difference]: With dead ends: 39 [2020-10-26 03:24:16,330 INFO L226 Difference]: Without dead ends: 39 [2020-10-26 03:24:16,330 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 [2020-10-26 03:24:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-26 03:24:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-26 03:24:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 03:24:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-26 03:24:16,336 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2020-10-26 03:24:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:16,337 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-26 03:24:16,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:24:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-26 03:24:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:24:16,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:16,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:16,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:16,550 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2020-10-26 03:24:16,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:16,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540197542] [2020-10-26 03:24:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:16,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540197542] [2020-10-26 03:24:16,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533746695] [2020-10-26 03:24:16,640 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 [2020-10-26 03:24:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:16,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:24:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:16,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:24:16,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-10-26 03:24:16,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807294030] [2020-10-26 03:24:16,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:24:16,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:24:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:24:16,834 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 11 states. [2020-10-26 03:24:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:17,039 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-10-26 03:24:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:24:17,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-26 03:24:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:17,041 INFO L225 Difference]: With dead ends: 50 [2020-10-26 03:24:17,041 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 03:24:17,042 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 [2020-10-26 03:24:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 03:24:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-26 03:24:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 03:24:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-26 03:24:17,047 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2020-10-26 03:24:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:17,048 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-26 03:24:17,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:24:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-26 03:24:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:24:17,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:17,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:24:17,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:17,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2020-10-26 03:24:17,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:17,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312810464] [2020-10-26 03:24:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:24:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312810464] [2020-10-26 03:24:17,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:24:17,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:24:17,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995898792] [2020-10-26 03:24:17,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:24:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:24:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:24:17,354 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-26 03:24:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:17,454 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-26 03:24:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:24:17,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-26 03:24:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:17,456 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:24:17,456 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:24:17,458 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 [2020-10-26 03:24:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:24:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-26 03:24:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 03:24:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-26 03:24:17,466 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2020-10-26 03:24:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:17,466 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-26 03:24:17,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:24:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-26 03:24:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:24:17,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:17,467 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] [2020-10-26 03:24:17,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:24:17,467 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:17,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2020-10-26 03:24:17,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:17,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120677891] [2020-10-26 03:24:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:24:17,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120677891] [2020-10-26 03:24:17,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2917303] [2020-10-26 03:24:17,582 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 [2020-10-26 03:24:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:17,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:24:17,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:24:17,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:24:17,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-26 03:24:17,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653786637] [2020-10-26 03:24:17,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:24:17,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:17,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:24:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:24:17,734 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-10-26 03:24:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:17,778 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-26 03:24:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:24:17,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-26 03:24:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:17,780 INFO L225 Difference]: With dead ends: 56 [2020-10-26 03:24:17,780 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:24:17,780 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 [2020-10-26 03:24:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:24:17,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-26 03:24:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 03:24:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-26 03:24:17,786 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2020-10-26 03:24:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:17,786 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-26 03:24:17,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:24:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-26 03:24:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:24:17,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:17,788 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] [2020-10-26 03:24:17,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:17,999 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:18,000 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2020-10-26 03:24:18,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:18,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909036723] [2020-10-26 03:24:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:18,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909036723] [2020-10-26 03:24:18,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908460927] [2020-10-26 03:24:18,080 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 [2020-10-26 03:24:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:24:18,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:18,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:24:18,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-26 03:24:18,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271230506] [2020-10-26 03:24:18,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:24:18,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:18,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:24:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:24:18,265 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 11 states. [2020-10-26 03:24:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:18,469 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-26 03:24:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:24:18,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-26 03:24:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:18,470 INFO L225 Difference]: With dead ends: 73 [2020-10-26 03:24:18,470 INFO L226 Difference]: Without dead ends: 73 [2020-10-26 03:24:18,471 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 [2020-10-26 03:24:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-26 03:24:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2020-10-26 03:24:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 03:24:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-26 03:24:18,476 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 21 [2020-10-26 03:24:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:18,476 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-26 03:24:18,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:24:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-26 03:24:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:24:18,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:18,478 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] [2020-10-26 03:24:18,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:18,679 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:18,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2020-10-26 03:24:18,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:18,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797979862] [2020-10-26 03:24:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 03:24:18,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797979862] [2020-10-26 03:24:18,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:24:18,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:24:18,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461216455] [2020-10-26 03:24:18,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:24:18,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:18,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:24:18,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:24:18,750 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 5 states. [2020-10-26 03:24:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:18,779 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-26 03:24:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:24:18,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-26 03:24:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:18,780 INFO L225 Difference]: With dead ends: 56 [2020-10-26 03:24:18,780 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 03:24:18,781 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 [2020-10-26 03:24:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 03:24:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-26 03:24:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 03:24:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-26 03:24:18,784 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 22 [2020-10-26 03:24:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:18,785 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-26 03:24:18,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:24:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-26 03:24:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 03:24:18,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:24:18,786 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] [2020-10-26 03:24:18,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:24:18,787 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:24:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:24:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1009154207, now seen corresponding path program 2 times [2020-10-26 03:24:18,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:24:18,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63369124] [2020-10-26 03:24:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:24:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:24:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:24:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:24:18,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63369124] [2020-10-26 03:24:18,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542472930] [2020-10-26 03:24:18,936 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 [2020-10-26 03:24:19,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:24:19,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:24:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:24:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:24:19,070 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 [2020-10-26 03:24:19,070 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:24:19,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:24:19,080 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:24:19,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-26 03:24:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 03:24:19,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:24:19,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2020-10-26 03:24:19,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576583344] [2020-10-26 03:24:19,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 03:24:19,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:24:19,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 03:24:19,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-26 03:24:19,210 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2020-10-26 03:24:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:24:19,538 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-10-26 03:24:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:24:19,539 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-26 03:24:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:24:19,539 INFO L225 Difference]: With dead ends: 36 [2020-10-26 03:24:19,539 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:24:19,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:24:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:24:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:24:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:24:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:24:19,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-26 03:24:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:24:19,541 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:24:19,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 03:24:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:24:19,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:24:19,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:24:19,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:24:19 BoogieIcfgContainer [2020-10-26 03:24:19,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:24:19,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:24:19,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:24:19,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:24:19,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:24:14" (3/4) ... [2020-10-26 03:24:19,753 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:24:19,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-26 03:24:19,765 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-10-26 03:24:19,766 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-26 03:24:19,766 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:24:19,766 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:24:19,814 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:24:19,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:24:19,815 INFO L168 Benchmark]: Toolchain (without parser) took 7226.10 ms. Allocated memory was 52.4 MB in the beginning and 117.4 MB in the end (delta: 65.0 MB). Free memory was 27.9 MB in the beginning and 48.7 MB in the end (delta: -20.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,816 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:24:19,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.48 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.3 MB in the beginning and 45.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,819 INFO L168 Benchmark]: Boogie Preprocessor took 79.07 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 43.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,820 INFO L168 Benchmark]: RCFGBuilder took 708.47 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 37.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,821 INFO L168 Benchmark]: TraceAbstraction took 5725.54 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 36.8 MB in the beginning and 51.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,821 INFO L168 Benchmark]: Witness Printer took 65.09 ms. Allocated memory is still 117.4 MB. Free memory was 51.7 MB in the beginning and 48.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:24:19,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.48 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.3 MB in the beginning and 45.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.07 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 43.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.47 ms. Allocated memory is still 65.0 MB. Free memory was 43.1 MB in the beginning and 37.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5725.54 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 36.8 MB in the beginning and 51.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.09 ms. Allocated memory is still 117.4 MB. Free memory was 51.7 MB in the beginning and 48.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 5.6s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.6s, 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, 1.1s 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, 1.4s 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...