./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-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 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:50:50,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:50:50,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:50:50,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:50:50,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:50:50,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:50:50,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:50:50,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:50:50,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:50:50,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:50:50,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:50:50,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:50:50,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:50:50,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:50:50,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:50:50,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:50:50,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:50:50,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:50:50,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:50:50,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:50:50,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:50:50,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:50:50,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:50:50,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:50:50,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:50:50,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:50:50,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:50:50,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:50:50,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:50:50,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:50:50,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:50:50,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:50:50,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:50:50,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:50:50,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:50:50,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:50:50,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:50:50,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:50:50,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:50:50,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:50:50,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:50:50,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:50:50,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:50:50,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:50:50,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:50:50,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:50:50,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:50:50,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:50:50,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:50:50,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:50:50,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:50:50,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:50:50,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:50:50,489 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:50:50,489 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:50:50,489 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:50:50,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:50:50,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:50:50,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:50:50,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:50:50,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:50:50,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:50:50,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:50:50,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:50:50,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:50,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:50:50,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:50:50,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:50:50,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:50:50,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:50:50,493 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 -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2020-10-20 05:50:50,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:50:50,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:50:50,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:50:50,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:50:50,739 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:50:50,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-20 05:50:50,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6acef2559/35443df257384036aea2d4c0a36775c2/FLAG9ecc6534e [2020-10-20 05:50:51,353 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:50:51,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-20 05:50:51,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6acef2559/35443df257384036aea2d4c0a36775c2/FLAG9ecc6534e [2020-10-20 05:50:51,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6acef2559/35443df257384036aea2d4c0a36775c2 [2020-10-20 05:50:51,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:50:51,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:50:51,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:51,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:50:51,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:50:51,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:51" (1/1) ... [2020-10-20 05:50:51,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69873113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:51, skipping insertion in model container [2020-10-20 05:50:51,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:50:51" (1/1) ... [2020-10-20 05:50:51,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:50:51,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:50:52,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:52,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:50:52,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:50:52,240 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:50:52,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52 WrapperNode [2020-10-20 05:50:52,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:50:52,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:50:52,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:50:52,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:50:52,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... [2020-10-20 05:50:52,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:50:52,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:50:52,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:50:52,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:50:52,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:50:52,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:50:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:50:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:50:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:50:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:50:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:50:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:50:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrnlen [2020-10-20 05:50:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:50:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:50:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:50:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:50:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:50:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:50:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:50:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:50:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:50:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:50:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:50:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:50:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:50:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:50:52,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:50:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:50:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:50:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:50:52,375 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:50:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:50:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:50:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:50:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:50:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:50:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:50:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:50:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:50:52,377 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:50:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:50:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:50:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:50:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:50:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:50:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:50:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:50:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:50:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:50:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:50:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:50:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:50:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:50:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:50:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:50:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:50:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:50:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:50:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:50:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:50:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:50:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:50:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:50:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:50:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:50:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:50:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:50:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:50:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:50:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:50:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:50:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:50:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:50:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:50:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:50:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:50:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:50:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:50:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:50:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:50:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:50:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:50:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:50:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:50:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:50:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:50:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:50:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:50:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:50:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:50:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:50:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:50:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:50:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:50:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:50:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:50:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:50:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:50:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:50:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:50:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:50:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:50:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:50:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:50:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:50:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:50:52,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-20 05:50:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure cstrnlen [2020-10-20 05:50:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:50:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:50:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:50:52,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:50:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:50:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:50:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:50:52,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:50:52,871 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:50:52,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:52 BoogieIcfgContainer [2020-10-20 05:50:52,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:50:52,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:50:52,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:50:52,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:50:52,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:50:51" (1/3) ... [2020-10-20 05:50:52,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640fb869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:52, skipping insertion in model container [2020-10-20 05:50:52,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:50:52" (2/3) ... [2020-10-20 05:50:52,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640fb869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:50:52, skipping insertion in model container [2020-10-20 05:50:52,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:52" (3/3) ... [2020-10-20 05:50:52,885 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2020-10-20 05:50:52,906 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:50:52,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-20 05:50:52,936 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-20 05:50:52,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:50:52,953 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:50:52,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:50:52,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:50:52,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:50:52,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:50:52,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:50:52,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:50:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-20 05:50:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:52,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:52,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:52,978 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash 787746653, now seen corresponding path program 1 times [2020-10-20 05:50:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689566604] [2020-10-20 05:50:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:53,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689566604] [2020-10-20 05:50:53,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:53,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:50:53,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692089555] [2020-10-20 05:50:53,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:50:53,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:50:53,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:53,180 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-20 05:50:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:53,273 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-20 05:50:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:50:53,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 05:50:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:53,284 INFO L225 Difference]: With dead ends: 37 [2020-10-20 05:50:53,285 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 05:50:53,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:50:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 05:50:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 05:50:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 05:50:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-20 05:50:53,324 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 11 [2020-10-20 05:50:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:53,325 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-20 05:50:53,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:50:53,325 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-20 05:50:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:53,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:53,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:53,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:50:53,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash 787746343, now seen corresponding path program 1 times [2020-10-20 05:50:53,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:53,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189430280] [2020-10-20 05:50:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:53,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189430280] [2020-10-20 05:50:53,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:53,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:50:53,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286280987] [2020-10-20 05:50:53,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:50:53,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:53,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:50:53,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:53,443 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-20 05:50:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:53,533 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-20 05:50:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:53,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 05:50:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:53,535 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:50:53,535 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 05:50:53,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 05:50:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-20 05:50:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:50:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-20 05:50:53,542 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2020-10-20 05:50:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:53,542 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-20 05:50:53,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:50:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-20 05:50:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:53,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:53,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:53,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:50:53,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:53,545 INFO L82 PathProgramCache]: Analyzing trace with hash 787746344, now seen corresponding path program 1 times [2020-10-20 05:50:53,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:53,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818557528] [2020-10-20 05:50:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:53,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818557528] [2020-10-20 05:50:53,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:53,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:53,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621695503] [2020-10-20 05:50:53,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:53,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:53,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:53,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:53,624 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-20 05:50:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:53,743 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-20 05:50:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:53,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 05:50:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:53,745 INFO L225 Difference]: With dead ends: 31 [2020-10-20 05:50:53,745 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 05:50:53,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 05:50:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 05:50:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 05:50:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-20 05:50:53,754 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 11 [2020-10-20 05:50:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:53,754 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-20 05:50:53,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-20 05:50:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:53,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:53,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:53,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:50:53,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:53,762 INFO L82 PathProgramCache]: Analyzing trace with hash 787746397, now seen corresponding path program 1 times [2020-10-20 05:50:53,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278335082] [2020-10-20 05:50:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:53,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278335082] [2020-10-20 05:50:53,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:53,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:50:53,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825195921] [2020-10-20 05:50:53,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:53,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:53,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:53,855 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-20 05:50:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:53,958 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-20 05:50:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:50:53,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 05:50:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:53,962 INFO L225 Difference]: With dead ends: 39 [2020-10-20 05:50:53,962 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 05:50:53,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 05:50:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-20 05:50:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 05:50:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-20 05:50:53,973 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2020-10-20 05:50:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:53,974 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-20 05:50:53,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-20 05:50:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:50:53,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:53,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:53,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:50:53,976 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:53,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:53,976 INFO L82 PathProgramCache]: Analyzing trace with hash 789593439, now seen corresponding path program 1 times [2020-10-20 05:50:53,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:53,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014852478] [2020-10-20 05:50:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:54,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014852478] [2020-10-20 05:50:54,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:54,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:54,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439468965] [2020-10-20 05:50:54,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:54,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:54,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:54,046 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-20 05:50:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:54,173 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-20 05:50:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:54,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 05:50:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:54,175 INFO L225 Difference]: With dead ends: 43 [2020-10-20 05:50:54,175 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 05:50:54,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 05:50:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-20 05:50:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:50:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-20 05:50:54,181 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2020-10-20 05:50:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:54,182 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-20 05:50:54,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-20 05:50:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:50:54,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:54,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:54,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:50:54,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:54,184 INFO L82 PathProgramCache]: Analyzing trace with hash 849748688, now seen corresponding path program 1 times [2020-10-20 05:50:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:54,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511744936] [2020-10-20 05:50:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:54,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511744936] [2020-10-20 05:50:54,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:54,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:50:54,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534154654] [2020-10-20 05:50:54,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:50:54,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:54,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:50:54,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:50:54,269 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-20 05:50:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:54,400 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-10-20 05:50:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:54,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 05:50:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:54,403 INFO L225 Difference]: With dead ends: 35 [2020-10-20 05:50:54,403 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 05:50:54,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 05:50:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 05:50:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 05:50:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-20 05:50:54,410 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2020-10-20 05:50:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:54,410 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-20 05:50:54,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:50:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-20 05:50:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:50:54,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:54,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:54,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:50:54,412 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash 849748689, now seen corresponding path program 1 times [2020-10-20 05:50:54,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:54,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133005270] [2020-10-20 05:50:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:54,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133005270] [2020-10-20 05:50:54,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:54,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:50:54,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749014151] [2020-10-20 05:50:54,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:54,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:54,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:54,515 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 8 states. [2020-10-20 05:50:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:54,673 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-20 05:50:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:50:54,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-20 05:50:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:54,676 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:50:54,676 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:50:54,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:50:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:50:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-20 05:50:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 05:50:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-20 05:50:54,682 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 16 [2020-10-20 05:50:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:54,682 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-20 05:50:54,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-20 05:50:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:50:54,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:54,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:54,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:50:54,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2015068958, now seen corresponding path program 1 times [2020-10-20 05:50:54,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:54,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154631428] [2020-10-20 05:50:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:54,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154631428] [2020-10-20 05:50:54,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525893469] [2020-10-20 05:50:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:54,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:50:54,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:54,967 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 6 treesize of output 5 [2020-10-20 05:50:54,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:54,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:54,975 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:54,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:50:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:55,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:55,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 05:50:55,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268607262] [2020-10-20 05:50:55,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:50:55,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:55,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:50:55,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:55,016 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2020-10-20 05:50:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:55,170 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-20 05:50:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:50:55,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-20 05:50:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:55,171 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:50:55,172 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:50:55,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:50:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-20 05:50:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 05:50:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-20 05:50:55,178 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 15 [2020-10-20 05:50:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:55,178 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-20 05:50:55,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:50:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-20 05:50:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:50:55,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:55,179 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:55,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 05:50:55,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1695397446, now seen corresponding path program 1 times [2020-10-20 05:50:55,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:55,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249749159] [2020-10-20 05:50:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:55,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249749159] [2020-10-20 05:50:55,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:55,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:55,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614758554] [2020-10-20 05:50:55,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:50:55,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:55,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:50:55,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:50:55,443 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 4 states. [2020-10-20 05:50:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:55,503 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-20 05:50:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:55,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-20 05:50:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:55,504 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:50:55,504 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 05:50:55,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 05:50:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 05:50:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:50:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-20 05:50:55,508 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2020-10-20 05:50:55,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:55,509 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-20 05:50:55,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:50:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-20 05:50:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:50:55,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:55,510 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] [2020-10-20 05:50:55,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 05:50:55,511 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:55,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:55,511 INFO L82 PathProgramCache]: Analyzing trace with hash 964873536, now seen corresponding path program 1 times [2020-10-20 05:50:55,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:55,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911972955] [2020-10-20 05:50:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 05:50:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:55,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911972955] [2020-10-20 05:50:55,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:55,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 05:50:55,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180051164] [2020-10-20 05:50:55,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:50:55,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:50:55,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:50:55,618 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2020-10-20 05:50:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:55,811 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-20 05:50:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:50:55,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:50:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:55,812 INFO L225 Difference]: With dead ends: 58 [2020-10-20 05:50:55,812 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 05:50:55,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:50:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 05:50:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-10-20 05:50:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:50:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-20 05:50:55,829 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 21 [2020-10-20 05:50:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:55,830 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-20 05:50:55,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:50:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-20 05:50:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:50:55,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:55,832 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] [2020-10-20 05:50:55,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:50:55,832 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:55,833 INFO L82 PathProgramCache]: Analyzing trace with hash -46243714, now seen corresponding path program 1 times [2020-10-20 05:50:55,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:55,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092713004] [2020-10-20 05:50:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 05:50:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:55,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092713004] [2020-10-20 05:50:55,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:55,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:50:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315346307] [2020-10-20 05:50:55,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:50:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:50:55,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:50:55,930 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-20 05:50:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:56,104 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-10-20 05:50:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:50:56,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 05:50:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:56,105 INFO L225 Difference]: With dead ends: 55 [2020-10-20 05:50:56,105 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 05:50:56,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:50:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 05:50:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-10-20 05:50:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:50:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-20 05:50:56,114 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 21 [2020-10-20 05:50:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:56,114 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-20 05:50:56,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:50:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-20 05:50:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:50:56,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:56,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:56,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 05:50:56,116 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1827219927, now seen corresponding path program 1 times [2020-10-20 05:50:56,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:56,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38717210] [2020-10-20 05:50:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:56,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38717210] [2020-10-20 05:50:56,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921050028] [2020-10-20 05:50:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:56,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:50:56,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:56,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:50:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:56,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:56,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 05:50:56,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026288260] [2020-10-20 05:50:56,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:50:56,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:50:56,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:50:56,410 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2020-10-20 05:50:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:56,668 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-20 05:50:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:50:56,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-20 05:50:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:56,669 INFO L225 Difference]: With dead ends: 64 [2020-10-20 05:50:56,669 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 05:50:56,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:50:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 05:50:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-20 05:50:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 05:50:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-20 05:50:56,675 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 22 [2020-10-20 05:50:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:56,675 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-20 05:50:56,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:50:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-20 05:50:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:50:56,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:56,676 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:56,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 05:50:56,887 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1187883691, now seen corresponding path program 1 times [2020-10-20 05:50:56,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:56,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346698071] [2020-10-20 05:50:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:57,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346698071] [2020-10-20 05:50:57,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:57,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 05:50:57,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832459852] [2020-10-20 05:50:57,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:50:57,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:57,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:50:57,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:50:57,043 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 10 states. [2020-10-20 05:50:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:57,253 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-20 05:50:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:50:57,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-20 05:50:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:57,254 INFO L225 Difference]: With dead ends: 83 [2020-10-20 05:50:57,254 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 05:50:57,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-20 05:50:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 05:50:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-20 05:50:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 05:50:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-20 05:50:57,269 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 22 [2020-10-20 05:50:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:57,269 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-20 05:50:57,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:50:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-20 05:50:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:50:57,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:57,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:57,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 05:50:57,274 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:57,277 INFO L82 PathProgramCache]: Analyzing trace with hash 166815337, now seen corresponding path program 1 times [2020-10-20 05:50:57,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:57,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493626368] [2020-10-20 05:50:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:57,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493626368] [2020-10-20 05:50:57,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:57,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 05:50:57,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935236486] [2020-10-20 05:50:57,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:50:57,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:50:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:50:57,451 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-10-20 05:50:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:57,714 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-20 05:50:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:50:57,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-20 05:50:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:57,716 INFO L225 Difference]: With dead ends: 100 [2020-10-20 05:50:57,716 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 05:50:57,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:50:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 05:50:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 69. [2020-10-20 05:50:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-20 05:50:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-20 05:50:57,722 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 22 [2020-10-20 05:50:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:57,723 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-20 05:50:57,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:50:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-20 05:50:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 05:50:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:57,724 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, 1] [2020-10-20 05:50:57,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 05:50:57,725 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:57,725 INFO L82 PathProgramCache]: Analyzing trace with hash -862082627, now seen corresponding path program 1 times [2020-10-20 05:50:57,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:57,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372778438] [2020-10-20 05:50:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 05:50:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:57,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372778438] [2020-10-20 05:50:57,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:50:57,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:50:57,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384093491] [2020-10-20 05:50:57,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:50:57,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:57,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:50:57,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:57,785 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 5 states. [2020-10-20 05:50:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:57,834 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-20 05:50:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:50:57,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-20 05:50:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:57,836 INFO L225 Difference]: With dead ends: 68 [2020-10-20 05:50:57,836 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 05:50:57,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:50:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 05:50:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-20 05:50:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 05:50:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-20 05:50:57,838 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2020-10-20 05:50:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:57,838 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-20 05:50:57,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:50:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-20 05:50:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:50:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:57,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:57,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 05:50:57,840 INFO L429 AbstractCegarLoop]: === Iteration 16 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:57,841 INFO L82 PathProgramCache]: Analyzing trace with hash 869619206, now seen corresponding path program 1 times [2020-10-20 05:50:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988955211] [2020-10-20 05:50:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988955211] [2020-10-20 05:50:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314070960] [2020-10-20 05:50:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:58,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 05:50:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:58,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:58,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2020-10-20 05:50:58,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937032592] [2020-10-20 05:50:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:50:58,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:50:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:50:58,123 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2020-10-20 05:50:58,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:58,360 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-10-20 05:50:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:50:58,361 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-20 05:50:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:58,362 INFO L225 Difference]: With dead ends: 39 [2020-10-20 05:50:58,362 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 05:50:58,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:50:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 05:50:58,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-20 05:50:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 05:50:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-20 05:50:58,366 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-10-20 05:50:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:58,367 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-20 05:50:58,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:50:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-20 05:50:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 05:50:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:58,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:50:58,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 05:50:58,571 INFO L429 AbstractCegarLoop]: === Iteration 17 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:50:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:50:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2038559330, now seen corresponding path program 2 times [2020-10-20 05:50:58,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:50:58,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160974159] [2020-10-20 05:50:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:50:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:50:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:50:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:58,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160974159] [2020-10-20 05:50:58,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028948204] [2020-10-20 05:50:58,896 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:50:59,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:50:59,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:50:59,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-20 05:50:59,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:50:59,125 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2020-10-20 05:50:59,126 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:50:59,134 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:59,138 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:50:59,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-10-20 05:50:59,382 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:50:59,382 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2020-10-20 05:50:59,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 05:50:59,395 INFO L625 ElimStorePlain]: treesize reduction 8, result has 55.6 percent of original size [2020-10-20 05:50:59,397 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:50:59,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2020-10-20 05:50:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:50:59,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:50:59,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2020-10-20 05:50:59,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848772549] [2020-10-20 05:50:59,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-20 05:50:59,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:50:59,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-20 05:50:59,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:50:59,407 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 21 states. [2020-10-20 05:50:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:50:59,893 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-10-20 05:50:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:50:59,894 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2020-10-20 05:50:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:50:59,894 INFO L225 Difference]: With dead ends: 54 [2020-10-20 05:50:59,894 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 05:50:59,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-10-20 05:50:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 05:50:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-20 05:50:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 05:50:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-20 05:50:59,898 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2020-10-20 05:50:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:50:59,898 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-20 05:50:59,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-20 05:50:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-20 05:50:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 05:50:59,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:50:59,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:00,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:00,108 INFO L429 AbstractCegarLoop]: === Iteration 18 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:00,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1010508549, now seen corresponding path program 3 times [2020-10-20 05:51:00,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:00,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739672624] [2020-10-20 05:51:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:00,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739672624] [2020-10-20 05:51:00,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020057665] [2020-10-20 05:51:00,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:00,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 05:51:00,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:00,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 05:51:00,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:00,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:00,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-20 05:51:00,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444276724] [2020-10-20 05:51:00,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:51:00,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:00,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:51:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-20 05:51:00,502 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2020-10-20 05:51:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:00,821 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-20 05:51:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:51:00,822 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2020-10-20 05:51:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:00,823 INFO L225 Difference]: With dead ends: 46 [2020-10-20 05:51:00,823 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 05:51:00,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:51:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 05:51:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-20 05:51:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:51:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-20 05:51:00,826 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 36 [2020-10-20 05:51:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:00,827 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-20 05:51:00,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:51:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-20 05:51:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-20 05:51:00,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:00,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:01,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 05:51:01,038 INFO L429 AbstractCegarLoop]: === Iteration 19 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1250412755, now seen corresponding path program 4 times [2020-10-20 05:51:01,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:01,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248504715] [2020-10-20 05:51:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:01,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248504715] [2020-10-20 05:51:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811788361] [2020-10-20 05:51:01,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:01,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:51:01,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-20 05:51:01,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:01,418 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 6 treesize of output 5 [2020-10-20 05:51:01,418 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:01,427 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:01,527 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-20 05:51:01,528 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:01,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-20 05:51:01,742 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-10-20 05:51:01,744 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:51:01,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:01,761 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 05:51:01,775 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:01,775 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-10-20 05:51:01,776 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:01,784 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:01,784 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2020-10-20 05:51:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:01,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:01,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2020-10-20 05:51:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594523392] [2020-10-20 05:51:01,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-20 05:51:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-20 05:51:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:51:01,794 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 25 states. [2020-10-20 05:51:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:02,599 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-20 05:51:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 05:51:02,600 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 42 [2020-10-20 05:51:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:02,601 INFO L225 Difference]: With dead ends: 70 [2020-10-20 05:51:02,601 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 05:51:02,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2020-10-20 05:51:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 05:51:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-20 05:51:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 05:51:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-20 05:51:02,605 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2020-10-20 05:51:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:02,606 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-20 05:51:02,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-20 05:51:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-20 05:51:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 05:51:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:02,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:02,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:02,823 INFO L429 AbstractCegarLoop]: === Iteration 20 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash 736937968, now seen corresponding path program 5 times [2020-10-20 05:51:02,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:02,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192724972] [2020-10-20 05:51:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:02,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192724972] [2020-10-20 05:51:02,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092962635] [2020-10-20 05:51:02,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:03,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 05:51:03,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:03,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 05:51:03,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:03,114 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 6 treesize of output 5 [2020-10-20 05:51:03,115 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:03,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:03,121 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:03,121 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:03,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:03,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-20 05:51:03,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419374736] [2020-10-20 05:51:03,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 05:51:03,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:03,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 05:51:03,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:51:03,212 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-10-20 05:51:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:03,569 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-10-20 05:51:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:51:03,569 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-20 05:51:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:03,570 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:51:03,570 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 05:51:03,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:51:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 05:51:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-20 05:51:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 05:51:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-20 05:51:03,574 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-10-20 05:51:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:03,574 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-20 05:51:03,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 05:51:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-20 05:51:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 05:51:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:03,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:03,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:03,783 INFO L429 AbstractCegarLoop]: === Iteration 21 === [cstrnlenErr0REQUIRES_VIOLATION, cstrnlenErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:03,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash -873535480, now seen corresponding path program 6 times [2020-10-20 05:51:03,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:51:03,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932941341] [2020-10-20 05:51:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:51:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:51:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:51:04,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932941341] [2020-10-20 05:51:04,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151074813] [2020-10-20 05:51:04,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:04,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-20 05:51:04,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:51:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-20 05:51:04,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:04,151 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 6 treesize of output 5 [2020-10-20 05:51:04,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:04,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:04,156 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:04,156 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:51:04,183 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-10-20 05:51:04,184 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:04,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:04,187 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:04,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-20 05:51:04,270 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:04,270 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-10-20 05:51:04,271 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 05:51:04,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:04,285 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:04,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2020-10-20 05:51:04,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:51:04,341 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:51:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-20 05:51:04,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:04,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 25 [2020-10-20 05:51:04,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752000867] [2020-10-20 05:51:04,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-20 05:51:04,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:51:04,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-20 05:51:04,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:51:04,475 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 25 states. [2020-10-20 05:51:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:06,794 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-20 05:51:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-20 05:51:06,794 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2020-10-20 05:51:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:06,795 INFO L225 Difference]: With dead ends: 85 [2020-10-20 05:51:06,795 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 05:51:06,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=443, Invalid=2863, Unknown=0, NotChecked=0, Total=3306 [2020-10-20 05:51:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 05:51:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 05:51:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 05:51:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 05:51:06,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-10-20 05:51:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:06,798 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 05:51:06,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-20 05:51:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 05:51:06,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 05:51:07,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-20 05:51:07,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:51:07 BoogieIcfgContainer [2020-10-20 05:51:07,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:51:07,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:51:07,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:51:07,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:51:07,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:50:52" (3/4) ... [2020-10-20 05:51:07,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 05:51:07,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 05:51:07,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-20 05:51:07,025 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrnlen [2020-10-20 05:51:07,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-20 05:51:07,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-20 05:51:07,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-20 05:51:07,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 05:51:07,026 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-20 05:51:07,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 05:51:07,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 05:51:07,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:51:07,031 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 05:51:07,080 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:51:07,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:51:07,082 INFO L168 Benchmark]: Toolchain (without parser) took 15455.94 ms. Allocated memory was 35.7 MB in the beginning and 104.3 MB in the end (delta: 68.7 MB). Free memory was 14.5 MB in the beginning and 8.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,082 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.1 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.00 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 13.6 MB in the beginning and 27.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,084 INFO L168 Benchmark]: Boogie Preprocessor took 61.24 ms. Allocated memory is still 46.7 MB. Free memory was 27.6 MB in the beginning and 25.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,084 INFO L168 Benchmark]: RCFGBuilder took 569.76 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 24.9 MB in the beginning and 13.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,085 INFO L168 Benchmark]: TraceAbstraction took 14139.98 ms. Allocated memory was 48.2 MB in the beginning and 104.3 MB in the end (delta: 56.1 MB). Free memory was 13.4 MB in the beginning and 13.2 MB in the end (delta: 197.7 kB). Peak memory consumption was 56.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,085 INFO L168 Benchmark]: Witness Printer took 66.34 ms. Allocated memory is still 104.3 MB. Free memory was 13.2 MB in the beginning and 10.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:07,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.1 MB in the beginning and 10.1 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 609.00 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 13.6 MB in the beginning and 27.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 61.24 ms. Allocated memory is still 46.7 MB. Free memory was 27.6 MB in the beginning and 25.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 569.76 ms. Allocated memory was 46.7 MB in the beginning and 48.2 MB in the end (delta: 1.6 MB). Free memory was 24.9 MB in the beginning and 13.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 14139.98 ms. Allocated memory was 48.2 MB in the beginning and 104.3 MB in the end (delta: 56.1 MB). Free memory was 13.4 MB in the beginning and 13.2 MB in the end (delta: 197.7 kB). Peak memory consumption was 56.3 MB. Max. memory is 14.3 GB. * Witness Printer took 66.34 ms. Allocated memory is still 104.3 MB. Free memory was 13.2 MB in the beginning and 10.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 537]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.0s, OverallIterations: 21, TraceHistogramMax: 5, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 1064 SDslu, 950 SDs, 0 SdLazy, 3810 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 561 GetRequests, 271 SyntacticMatches, 3 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 122 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 758 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 729 ConstructedInterpolants, 11 QuantifiedInterpolants, 168220 SizeOfPredicates, 58 NumberOfNonLiveVariables, 996 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 124/364 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...