./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e28603c63113c1566dc2e06da17c63059f80486 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 17:55:41,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 17:55:41,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 17:55:41,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 17:55:41,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 17:55:41,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 17:55:41,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 17:55:41,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 17:55:41,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 17:55:41,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 17:55:41,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 17:55:41,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 17:55:41,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 17:55:41,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 17:55:41,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 17:55:41,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 17:55:41,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 17:55:41,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 17:55:41,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 17:55:41,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 17:55:41,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 17:55:41,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 17:55:41,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 17:55:41,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 17:55:41,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 17:55:41,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 17:55:41,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 17:55:41,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 17:55:41,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 17:55:41,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 17:55:41,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 17:55:41,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 17:55:41,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 17:55:41,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 17:55:41,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 17:55:41,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 17:55:41,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 17:55:41,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 17:55:41,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 17:55:41,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 17:55:41,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 17:55:41,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 17:55:41,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 17:55:41,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 17:55:41,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 17:55:41,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 17:55:41,407 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 17:55:41,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 17:55:41,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 17:55:41,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 17:55:41,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 17:55:41,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 17:55:41,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 17:55:41,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 17:55:41,410 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 17:55:41,410 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 17:55:41,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 17:55:41,411 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 17:55:41,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 17:55:41,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 17:55:41,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 17:55:41,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 17:55:41,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 17:55:41,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 17:55:41,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 17:55:41,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 17:55:41,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 17:55:41,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 17:55:41,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 17:55:41,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 17:55:41,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-10-19 17:55:41,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 17:55:41,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 17:55:41,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 17:55:41,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 17:55:41,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 17:55:41,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-19 17:55:41,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d63345a9/d65f45f2297e44db9b36b883dd1cfbea/FLAGad4eed56a [2020-10-19 17:55:42,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 17:55:42,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-19 17:55:42,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d63345a9/d65f45f2297e44db9b36b883dd1cfbea/FLAGad4eed56a [2020-10-19 17:55:42,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d63345a9/d65f45f2297e44db9b36b883dd1cfbea [2020-10-19 17:55:42,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 17:55:42,661 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 17:55:42,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:42,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 17:55:42,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 17:55:42,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c05edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:42, skipping insertion in model container [2020-10-19 17:55:42,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 05:55:42" (1/1) ... [2020-10-19 17:55:42,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 17:55:42,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 17:55:43,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:43,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 17:55:43,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 17:55:43,286 INFO L208 MainTranslator]: Completed translation [2020-10-19 17:55:43,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43 WrapperNode [2020-10-19 17:55:43,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 17:55:43,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 17:55:43,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 17:55:43,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 17:55:43,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (1/1) ... [2020-10-19 17:55:43,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 17:55:43,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 17:55:43,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 17:55:43,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 17:55:43,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (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 [2020-10-19 17:55:43,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 17:55:43,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 17:55:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 17:55:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 17:55:43,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 17:55:43,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 17:55:43,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 17:55:43,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 17:55:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 17:55:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 17:55:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 17:55:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 17:55:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 17:55:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 17:55:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 17:55:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 17:55:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 17:55:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 17:55:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 17:55:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 17:55:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 17:55:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 17:55:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 17:55:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 17:55:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 17:55:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 17:55:43,436 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 17:55:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 17:55:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 17:55:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 17:55:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 17:55:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 17:55:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 17:55:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 17:55:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 17:55:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 17:55:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 17:55:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 17:55:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 17:55:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 17:55:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 17:55:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 17:55:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 17:55:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 17:55:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 17:55:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 17:55:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 17:55:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 17:55:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 17:55:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 17:55:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 17:55:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 17:55:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 17:55:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 17:55:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 17:55:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 17:55:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 17:55:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 17:55:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 17:55:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 17:55:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 17:55:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 17:55:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 17:55:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 17:55:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 17:55:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 17:55:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 17:55:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 17:55:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 17:55:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 17:55:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 17:55:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 17:55:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 17:55:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 17:55:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 17:55:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 17:55:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 17:55:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 17:55:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 17:55:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 17:55:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 17:55:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 17:55:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 17:55:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 17:55:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 17:55:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 17:55:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 17:55:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 17:55:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 17:55:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 17:55:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 17:55:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 17:55:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 17:55:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 17:55:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 17:55:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 17:55:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 17:55:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 17:55:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 17:55:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 17:55:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 17:55:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 17:55:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 17:55:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 17:55:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 17:55:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 17:55:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 17:55:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 17:55:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 17:55:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 17:55:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 17:55:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 17:55:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 17:55:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 17:55:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 17:55:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 17:55:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 17:55:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 17:55:44,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 17:55:44,002 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-19 17:55:44,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:44 BoogieIcfgContainer [2020-10-19 17:55:44,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 17:55:44,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 17:55:44,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 17:55:44,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 17:55:44,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 05:55:42" (1/3) ... [2020-10-19 17:55:44,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159fd214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:44, skipping insertion in model container [2020-10-19 17:55:44,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 05:55:43" (2/3) ... [2020-10-19 17:55:44,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159fd214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 05:55:44, skipping insertion in model container [2020-10-19 17:55:44,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:44" (3/3) ... [2020-10-19 17:55:44,014 INFO L111 eAbstractionObserver]: Analyzing ICFG count_down-alloca-1.i [2020-10-19 17:55:44,026 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 17:55:44,034 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-19 17:55:44,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-19 17:55:44,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 17:55:44,068 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 17:55:44,068 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 17:55:44,068 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 17:55:44,068 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 17:55:44,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 17:55:44,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 17:55:44,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 17:55:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-19 17:55:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 17:55:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash -587521551, now seen corresponding path program 1 times [2020-10-19 17:55:44,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781224695] [2020-10-19 17:55:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:44,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781224695] [2020-10-19 17:55:44,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:44,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:55:44,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668952005] [2020-10-19 17:55:44,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:55:44,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:44,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:55:44,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:55:44,343 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-19 17:55:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:44,480 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-19 17:55:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:44,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 17:55:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:44,493 INFO L225 Difference]: With dead ends: 36 [2020-10-19 17:55:44,493 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 17:55:44,496 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 [2020-10-19 17:55:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 17:55:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-19 17:55:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 17:55:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-19 17:55:44,538 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2020-10-19 17:55:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:44,539 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-19 17:55:44,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:55:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-19 17:55:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 17:55:44,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 17:55:44,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514850, now seen corresponding path program 1 times [2020-10-19 17:55:44,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115860109] [2020-10-19 17:55:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:44,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115860109] [2020-10-19 17:55:44,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:44,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 17:55:44,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806030196] [2020-10-19 17:55:44,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 17:55:44,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:44,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 17:55:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 17:55:44,646 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-19 17:55:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:44,725 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-10-19 17:55:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:55:44,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-19 17:55:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:44,727 INFO L225 Difference]: With dead ends: 29 [2020-10-19 17:55:44,727 INFO L226 Difference]: Without dead ends: 29 [2020-10-19 17:55:44,728 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 [2020-10-19 17:55:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-19 17:55:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-19 17:55:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 17:55:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-19 17:55:44,734 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2020-10-19 17:55:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:44,735 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-19 17:55:44,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 17:55:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-19 17:55:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 17:55:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:44,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:44,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 17:55:44,737 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1967514849, now seen corresponding path program 1 times [2020-10-19 17:55:44,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:44,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392377578] [2020-10-19 17:55:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:44,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392377578] [2020-10-19 17:55:44,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:44,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:55:44,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157903790] [2020-10-19 17:55:44,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 17:55:44,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:44,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 17:55:44,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 17:55:44,836 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-19 17:55:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:44,989 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-19 17:55:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:55:44,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-19 17:55:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:44,991 INFO L225 Difference]: With dead ends: 33 [2020-10-19 17:55:44,992 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 17:55:44,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:55:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 17:55:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-19 17:55:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 17:55:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-19 17:55:44,999 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2020-10-19 17:55:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:44,999 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-19 17:55:44,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 17:55:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-19 17:55:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 17:55:45,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:45,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:45,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 17:55:45,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash 467596310, now seen corresponding path program 1 times [2020-10-19 17:55:45,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:45,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997569533] [2020-10-19 17:55:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:45,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997569533] [2020-10-19 17:55:45,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278839469] [2020-10-19 17:55:45,077 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 [2020-10-19 17:55:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:55:45,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:45,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:55:45,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-19 17:55:45,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473157003] [2020-10-19 17:55:45,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:55:45,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:55:45,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:55:45,318 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2020-10-19 17:55:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:45,369 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-19 17:55:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:45,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-19 17:55:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:45,371 INFO L225 Difference]: With dead ends: 54 [2020-10-19 17:55:45,371 INFO L226 Difference]: Without dead ends: 54 [2020-10-19 17:55:45,372 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 [2020-10-19 17:55:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-19 17:55:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-19 17:55:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 17:55:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-19 17:55:45,379 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2020-10-19 17:55:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:45,379 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-19 17:55:45,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:55:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-19 17:55:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 17:55:45,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:45,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:45,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:45,596 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash 74569300, now seen corresponding path program 1 times [2020-10-19 17:55:45,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:45,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210775766] [2020-10-19 17:55:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210775766] [2020-10-19 17:55:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987342627] [2020-10-19 17:55:45,705 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 [2020-10-19 17:55:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:45,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:55:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:45,858 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 [2020-10-19 17:55:45,859 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:45,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:45,867 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:45,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 17:55:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:45,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:45,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-10-19 17:55:45,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256355525] [2020-10-19 17:55:45,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 17:55:45,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:45,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 17:55:45,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 17:55:45,926 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-19 17:55:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:46,070 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-19 17:55:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 17:55:46,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-19 17:55:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:46,072 INFO L225 Difference]: With dead ends: 39 [2020-10-19 17:55:46,072 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 17:55:46,073 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 [2020-10-19 17:55:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 17:55:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-19 17:55:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 17:55:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-19 17:55:46,078 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2020-10-19 17:55:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:46,078 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-19 17:55:46,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 17:55:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-19 17:55:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 17:55:46,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:46,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:46,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:46,293 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1610534241, now seen corresponding path program 1 times [2020-10-19 17:55:46,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:46,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145568610] [2020-10-19 17:55:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145568610] [2020-10-19 17:55:46,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837012572] [2020-10-19 17:55:46,370 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 [2020-10-19 17:55:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:46,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 17:55:46,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:46,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:46,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-10-19 17:55:46,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299301701] [2020-10-19 17:55:46,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 17:55:46,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:46,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 17:55:46,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:55:46,523 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 11 states. [2020-10-19 17:55:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:46,719 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-10-19 17:55:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 17:55:46,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-19 17:55:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:46,721 INFO L225 Difference]: With dead ends: 50 [2020-10-19 17:55:46,721 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 17:55:46,722 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 [2020-10-19 17:55:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 17:55:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-10-19 17:55:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 17:55:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-19 17:55:46,728 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2020-10-19 17:55:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:46,729 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-19 17:55:46,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 17:55:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-19 17:55:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 17:55:46,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:46,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 17:55:46,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:46,943 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:46,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1613047272, now seen corresponding path program 1 times [2020-10-19 17:55:46,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:46,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687595400] [2020-10-19 17:55:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:46,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687595400] [2020-10-19 17:55:46,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:46,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 17:55:46,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361933736] [2020-10-19 17:55:46,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:55:46,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:46,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:55:46,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:55:46,993 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-19 17:55:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:47,086 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-19 17:55:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 17:55:47,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 17:55:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:47,087 INFO L225 Difference]: With dead ends: 44 [2020-10-19 17:55:47,087 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 17:55:47,088 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 [2020-10-19 17:55:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 17:55:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-19 17:55:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 17:55:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-19 17:55:47,094 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2020-10-19 17:55:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:47,095 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-19 17:55:47,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:55:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-19 17:55:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:55:47,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:47,098 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] [2020-10-19 17:55:47,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 17:55:47,099 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2133289012, now seen corresponding path program 1 times [2020-10-19 17:55:47,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:47,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137183975] [2020-10-19 17:55:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:47,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137183975] [2020-10-19 17:55:47,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624178473] [2020-10-19 17:55:47,233 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 [2020-10-19 17:55:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 17:55:47,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 17:55:47,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 17:55:47,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2020-10-19 17:55:47,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718220991] [2020-10-19 17:55:47,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:55:47,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:55:47,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 17:55:47,353 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2020-10-19 17:55:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:47,396 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-19 17:55:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 17:55:47,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-19 17:55:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:47,398 INFO L225 Difference]: With dead ends: 56 [2020-10-19 17:55:47,398 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 17:55:47,398 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 [2020-10-19 17:55:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 17:55:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-19 17:55:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-19 17:55:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-19 17:55:47,404 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2020-10-19 17:55:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:47,404 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-19 17:55:47,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:55:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-19 17:55:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 17:55:47,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:47,406 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] [2020-10-19 17:55:47,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:47,618 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 853425334, now seen corresponding path program 1 times [2020-10-19 17:55:47,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:47,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317802938] [2020-10-19 17:55:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:47,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317802938] [2020-10-19 17:55:47,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085691690] [2020-10-19 17:55:47,682 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 [2020-10-19 17:55:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:47,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 17:55:47,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:47,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:47,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-19 17:55:47,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825289616] [2020-10-19 17:55:47,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 17:55:47,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:47,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 17:55:47,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-19 17:55:47,821 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 11 states. [2020-10-19 17:55:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:47,990 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-19 17:55:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 17:55:47,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-19 17:55:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:47,992 INFO L225 Difference]: With dead ends: 73 [2020-10-19 17:55:47,992 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 17:55:47,993 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 [2020-10-19 17:55:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 17:55:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 57. [2020-10-19 17:55:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 17:55:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-19 17:55:48,001 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 21 [2020-10-19 17:55:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:48,001 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-19 17:55:48,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 17:55:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-19 17:55:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 17:55:48,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:48,003 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] [2020-10-19 17:55:48,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:48,205 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1707448741, now seen corresponding path program 1 times [2020-10-19 17:55:48,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:48,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104374418] [2020-10-19 17:55:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 17:55:48,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104374418] [2020-10-19 17:55:48,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 17:55:48,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 17:55:48,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906510784] [2020-10-19 17:55:48,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 17:55:48,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:48,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 17:55:48,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 17:55:48,296 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 5 states. [2020-10-19 17:55:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:48,318 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-19 17:55:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 17:55:48,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 17:55:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:48,320 INFO L225 Difference]: With dead ends: 56 [2020-10-19 17:55:48,320 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 17:55:48,320 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 [2020-10-19 17:55:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 17:55:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-19 17:55:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 17:55:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-19 17:55:48,324 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 22 [2020-10-19 17:55:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:48,325 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-19 17:55:48,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 17:55:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-19 17:55:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 17:55:48,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 17:55:48,326 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] [2020-10-19 17:55:48,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 17:55:48,327 INFO L429 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-19 17:55:48,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 17:55:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1009154207, now seen corresponding path program 2 times [2020-10-19 17:55:48,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 17:55:48,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515515551] [2020-10-19 17:55:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 17:55:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 17:55:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 17:55:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 17:55:48,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515515551] [2020-10-19 17:55:48,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510099051] [2020-10-19 17:55:48,434 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 [2020-10-19 17:55:48,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 17:55:48,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 17:55:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 17:55:48,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 17:55:48,569 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 [2020-10-19 17:55:48,570 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 17:55:48,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 17:55:48,581 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 17:55:48,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2020-10-19 17:55:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-19 17:55:48,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 17:55:48,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2020-10-19 17:55:48,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402162064] [2020-10-19 17:55:48,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 17:55:48,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 17:55:48,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 17:55:48,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-19 17:55:48,677 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2020-10-19 17:55:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 17:55:48,952 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-10-19 17:55:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 17:55:48,952 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-19 17:55:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 17:55:48,953 INFO L225 Difference]: With dead ends: 36 [2020-10-19 17:55:48,953 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 17:55:48,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-19 17:55:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 17:55:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 17:55:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 17:55:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 17:55:48,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-19 17:55:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 17:55:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 17:55:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 17:55:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 17:55:48,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 17:55:49,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 17:55:49,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 05:55:49 BoogieIcfgContainer [2020-10-19 17:55:49,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 17:55:49,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 17:55:49,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 17:55:49,172 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 17:55:49,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 05:55:44" (3/4) ... [2020-10-19 17:55:49,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 17:55:49,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-19 17:55:49,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-19 17:55:49,183 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-19 17:55:49,184 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-19 17:55:49,184 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-19 17:55:49,184 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-19 17:55:49,184 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-19 17:55:49,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-19 17:55:49,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 17:55:49,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:55:49,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 17:55:49,235 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 17:55:49,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 17:55:49,237 INFO L168 Benchmark]: Toolchain (without parser) took 6579.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.1 MB). Free memory was 960.0 MB in the beginning and 936.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 241.8 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,237 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 17:55:49,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,239 INFO L168 Benchmark]: Boogie Preprocessor took 68.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,239 INFO L168 Benchmark]: RCFGBuilder took 646.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,240 INFO L168 Benchmark]: TraceAbstraction took 5164.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 943.8 MB in the end (delta: 130.5 MB). Peak memory consumption was 203.9 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,240 INFO L168 Benchmark]: Witness Printer took 64.12 ms. Allocated memory is still 1.2 GB. Free memory was 943.8 MB in the beginning and 936.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2020-10-19 17:55:49,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 623.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 646.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5164.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 943.8 MB in the end (delta: 130.5 MB). Peak memory consumption was 203.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.12 ms. Allocated memory is still 1.2 GB. Free memory was 943.8 MB in the beginning and 936.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 51 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.4s, 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, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s 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, 1.3s 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...