./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer --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 b2d654b7b73105d319f19561f723c76c3f2a6a70 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:00:31,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:00:31,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:00:31,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:00:31,425 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:00:31,425 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:00:31,426 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:00:31,427 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:00:31,428 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:00:31,429 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:00:31,430 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:00:31,430 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:00:31,430 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:00:31,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:00:31,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:00:31,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:00:31,432 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:00:31,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:00:31,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:00:31,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:00:31,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:00:31,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:00:31,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:00:31,439 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:00:31,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:00:31,439 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:00:31,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:00:31,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:00:31,441 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:00:31,441 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:00:31,441 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:00:31,442 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:00:31,442 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:00:31,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:00:31,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:00:31,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:00:31,443 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 12:00:31,450 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:00:31,450 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:00:31,451 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:00:31,451 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:00:31,451 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:00:31,452 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:00:31,452 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:00:31,453 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:00:31,454 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:00:31,454 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:00:31,454 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:00:31,454 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:00:31,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:00:31,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:00:31,455 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:00:31,455 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:00:31,455 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:00:31,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:00:31,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer 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 -> b2d654b7b73105d319f19561f723c76c3f2a6a70 [2018-11-28 12:00:31,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:00:31,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:00:31,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:00:31,493 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:00:31,493 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:00:31,494 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 12:00:31,539 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/data/92645b176/7baa482340a14c7aab357adf419de5b3/FLAG8db282fa9 [2018-11-28 12:00:31,919 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:00:31,919 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 12:00:31,928 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/data/92645b176/7baa482340a14c7aab357adf419de5b3/FLAG8db282fa9 [2018-11-28 12:00:32,305 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/data/92645b176/7baa482340a14c7aab357adf419de5b3 [2018-11-28 12:00:32,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:00:32,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:00:32,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:00:32,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:00:32,312 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:00:32,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39239a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32, skipping insertion in model container [2018-11-28 12:00:32,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:00:32,342 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:00:32,524 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:00:32,533 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:00:32,606 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:00:32,629 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:00:32,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32 WrapperNode [2018-11-28 12:00:32,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:00:32,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:00:32,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:00:32,630 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:00:32,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... [2018-11-28 12:00:32,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:00:32,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:00:32,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:00:32,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:00:32,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/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 [2018-11-28 12:00:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:00:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:00:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 12:00:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 12:00:32,704 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-11-28 12:00:32,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 12:00:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 12:00:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 12:00:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 12:00:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 12:00:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 12:00:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 12:00:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 12:00:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 12:00:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 12:00:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 12:00:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 12:00:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-11-28 12:00:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:00:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:00:33,011 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:00:33,011 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 12:00:33,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:33 BoogieIcfgContainer [2018-11-28 12:00:33,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:00:33,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:00:33,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:00:33,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:00:33,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:00:32" (1/3) ... [2018-11-28 12:00:33,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c876aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:33, skipping insertion in model container [2018-11-28 12:00:33,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:00:32" (2/3) ... [2018-11-28 12:00:33,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c876aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:00:33, skipping insertion in model container [2018-11-28 12:00:33,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:33" (3/3) ... [2018-11-28 12:00:33,017 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 12:00:33,022 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:00:33,027 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 12:00:33,039 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 12:00:33,056 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:00:33,056 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:00:33,056 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:00:33,056 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:00:33,056 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:00:33,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:00:33,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:00:33,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:00:33,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:00:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-28 12:00:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:00:33,075 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,075 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,077 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash 364110360, now seen corresponding path program 1 times [2018-11-28 12:00:33,081 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:00:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:00:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:00:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:00:33,209 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2018-11-28 12:00:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,262 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-11-28 12:00:33,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:00:33,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 12:00:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,269 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:00:33,269 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 12:00:33,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:00:33,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 12:00:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-28 12:00:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 12:00:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-11-28 12:00:33,291 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 10 [2018-11-28 12:00:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,292 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-11-28 12:00:33,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:00:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-11-28 12:00:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:00:33,292 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,292 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,293 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,293 INFO L82 PathProgramCache]: Analyzing trace with hash 364110361, now seen corresponding path program 1 times [2018-11-28 12:00:33,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:00:33,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:00:33,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:00:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:00:33,355 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 4 states. [2018-11-28 12:00:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,385 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-11-28 12:00:33,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:00:33,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 12:00:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,387 INFO L225 Difference]: With dead ends: 45 [2018-11-28 12:00:33,387 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 12:00:33,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:00:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 12:00:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 12:00:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 12:00:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 12:00:33,392 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 10 [2018-11-28 12:00:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,393 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 12:00:33,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:00:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 12:00:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:00:33,393 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,393 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,394 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1597480737, now seen corresponding path program 1 times [2018-11-28 12:00:33,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:00:33,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:00:33,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:00:33,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:00:33,418 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 3 states. [2018-11-28 12:00:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,443 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2018-11-28 12:00:33,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:00:33,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 12:00:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,444 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:00:33,444 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 12:00:33,445 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:00:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 12:00:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 12:00:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 12:00:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-11-28 12:00:33,448 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 11 [2018-11-28 12:00:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,448 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-11-28 12:00:33,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:00:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-11-28 12:00:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:00:33,449 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,449 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,449 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1597480736, now seen corresponding path program 1 times [2018-11-28 12:00:33,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:00:33,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:00:33,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:00:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:00:33,503 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 4 states. [2018-11-28 12:00:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,514 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-11-28 12:00:33,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:00:33,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 12:00:33,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,515 INFO L225 Difference]: With dead ends: 43 [2018-11-28 12:00:33,516 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 12:00:33,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:00:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 12:00:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 12:00:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 12:00:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-11-28 12:00:33,519 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 11 [2018-11-28 12:00:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,519 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-11-28 12:00:33,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:00:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-11-28 12:00:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 12:00:33,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,520 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,520 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash -373360435, now seen corresponding path program 1 times [2018-11-28 12:00:33,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:00:33,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:00:33,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:00:33,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:00:33,566 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2018-11-28 12:00:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,630 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-11-28 12:00:33,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:00:33,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 12:00:33,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,630 INFO L225 Difference]: With dead ends: 41 [2018-11-28 12:00:33,630 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 12:00:33,631 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:00:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 12:00:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 12:00:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 12:00:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 12:00:33,632 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 16 [2018-11-28 12:00:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,633 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 12:00:33,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:00:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 12:00:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 12:00:33,633 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,633 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,633 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash -373360434, now seen corresponding path program 1 times [2018-11-28 12:00:33,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 12:00:33,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:00:33,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:00:33,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:00:33,715 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 7 states. [2018-11-28 12:00:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,814 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-11-28 12:00:33,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:00:33,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-28 12:00:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,816 INFO L225 Difference]: With dead ends: 55 [2018-11-28 12:00:33,816 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 12:00:33,816 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:00:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 12:00:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2018-11-28 12:00:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 12:00:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-28 12:00:33,820 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 16 [2018-11-28 12:00:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,820 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-28 12:00:33,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:00:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-28 12:00:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 12:00:33,821 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,821 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,821 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1977875214, now seen corresponding path program 1 times [2018-11-28 12:00:33,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:33,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:33,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:00:33,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:00:33,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:00:33,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:00:33,862 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 6 states. [2018-11-28 12:00:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:33,934 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2018-11-28 12:00:33,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:00:33,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-28 12:00:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:33,935 INFO L225 Difference]: With dead ends: 45 [2018-11-28 12:00:33,935 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 12:00:33,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:00:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 12:00:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 12:00:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 12:00:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-11-28 12:00:33,939 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 18 [2018-11-28 12:00:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:33,939 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-11-28 12:00:33,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:00:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-11-28 12:00:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 12:00:33,940 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:33,940 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:33,940 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:33,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1977875215, now seen corresponding path program 1 times [2018-11-28 12:00:33,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:33,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 12:00:34,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 12:00:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:00:34,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:00:34,024 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 8 states. [2018-11-28 12:00:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,099 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-11-28 12:00:34,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:00:34,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-28 12:00:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,100 INFO L225 Difference]: With dead ends: 47 [2018-11-28 12:00:34,100 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 12:00:34,101 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:00:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 12:00:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-28 12:00:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 12:00:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-11-28 12:00:34,104 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 18 [2018-11-28 12:00:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,104 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-11-28 12:00:34,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 12:00:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-11-28 12:00:34,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:00:34,105 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,105 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,105 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1184835937, now seen corresponding path program 1 times [2018-11-28 12:00:34,106 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:00:34,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:00:34,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:00:34,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:00:34,148 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-11-28 12:00:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,190 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-28 12:00:34,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:00:34,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 12:00:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,191 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:00:34,192 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 12:00:34,192 INFO L631 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 [2018-11-28 12:00:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 12:00:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 12:00:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 12:00:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-28 12:00:34,194 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 19 [2018-11-28 12:00:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,194 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-28 12:00:34,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:00:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-28 12:00:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:00:34,195 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,195 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,195 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1932430609, now seen corresponding path program 1 times [2018-11-28 12:00:34,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:00:34,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:00:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:00:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:00:34,242 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-11-28 12:00:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,283 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-28 12:00:34,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:00:34,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-11-28 12:00:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,284 INFO L225 Difference]: With dead ends: 37 [2018-11-28 12:00:34,284 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 12:00:34,284 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:00:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 12:00:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 12:00:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 12:00:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-11-28 12:00:34,286 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20 [2018-11-28 12:00:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,286 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-11-28 12:00:34,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:00:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-11-28 12:00:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:00:34,287 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,289 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,289 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1932430608, now seen corresponding path program 1 times [2018-11-28 12:00:34,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 12:00:34,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:00:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:00:34,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:00:34,338 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 7 states. [2018-11-28 12:00:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,389 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-11-28 12:00:34,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:00:34,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 12:00:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,390 INFO L225 Difference]: With dead ends: 42 [2018-11-28 12:00:34,390 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 12:00:34,390 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:00:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 12:00:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-28 12:00:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 12:00:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-28 12:00:34,392 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-11-28 12:00:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,392 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-28 12:00:34,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:00:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-28 12:00:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 12:00:34,392 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,392 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,393 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1640219440, now seen corresponding path program 1 times [2018-11-28 12:00:34,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:00:34,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:00:34,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:00:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:00:34,423 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-11-28 12:00:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,468 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-28 12:00:34,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:00:34,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-11-28 12:00:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,469 INFO L225 Difference]: With dead ends: 37 [2018-11-28 12:00:34,469 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 12:00:34,470 INFO L631 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 [2018-11-28 12:00:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 12:00:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 12:00:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 12:00:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-11-28 12:00:34,472 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 22 [2018-11-28 12:00:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,472 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-11-28 12:00:34,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:00:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-11-28 12:00:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 12:00:34,473 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,473 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,473 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1640219439, now seen corresponding path program 1 times [2018-11-28 12:00:34,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 12:00:34,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 12:00:34,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 12:00:34,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:00:34,572 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 10 states. [2018-11-28 12:00:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,671 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-28 12:00:34,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:00:34,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-11-28 12:00:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,672 INFO L225 Difference]: With dead ends: 45 [2018-11-28 12:00:34,673 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 12:00:34,673 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:00:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 12:00:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-11-28 12:00:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:00:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-28 12:00:34,675 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 22 [2018-11-28 12:00:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,675 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-28 12:00:34,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 12:00:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-28 12:00:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:00:34,676 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,676 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,676 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 268491889, now seen corresponding path program 1 times [2018-11-28 12:00:34,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:34,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:00:34,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 12:00:34,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:00:34,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:00:34,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:00:34,822 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2018-11-28 12:00:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:34,924 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-11-28 12:00:34,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:00:34,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-28 12:00:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:34,925 INFO L225 Difference]: With dead ends: 50 [2018-11-28 12:00:34,925 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:00:34,925 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:00:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:00:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:00:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:00:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-11-28 12:00:34,927 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2018-11-28 12:00:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:34,927 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-11-28 12:00:34,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:00:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-11-28 12:00:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:00:34,928 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:34,928 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:34,928 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:34,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1725652817, now seen corresponding path program 1 times [2018-11-28 12:00:34,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:34,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:34,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:35,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:35,149 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:35,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:35,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:35,257 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-28 12:00:35,259 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-28 12:00:35,259 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,260 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-11-28 12:00:35,370 INFO L478 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 26 treesize of output 26 [2018-11-28 12:00:35,374 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2018-11-28 12:00:35,374 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,383 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2018-11-28 12:00:35,384 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,391 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 3 [2018-11-28 12:00:35,392 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,396 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:35,396 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-11-28 12:00:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:35,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:00:35,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 19 [2018-11-28 12:00:35,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 12:00:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 12:00:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2018-11-28 12:00:35,428 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 19 states. [2018-11-28 12:00:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:35,918 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-28 12:00:35,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 12:00:35,918 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2018-11-28 12:00:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:35,918 INFO L225 Difference]: With dead ends: 61 [2018-11-28 12:00:35,918 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 12:00:35,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 12:00:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 12:00:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 12:00:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 12:00:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2018-11-28 12:00:35,921 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 24 [2018-11-28 12:00:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:35,921 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2018-11-28 12:00:35,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 12:00:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2018-11-28 12:00:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 12:00:35,922 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:35,922 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:35,922 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:35,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2111042098, now seen corresponding path program 1 times [2018-11-28 12:00:35,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:35,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:35,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:35,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:35,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:36,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:36,133 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:36,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:36,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:36,173 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-28 12:00:36,175 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-11-28 12:00:36,175 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:36,177 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:36,180 INFO L267 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. [2018-11-28 12:00:36,180 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-11-28 12:00:36,418 INFO L478 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 31 treesize of output 31 [2018-11-28 12:00:36,426 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2018-11-28 12:00:36,426 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:36,438 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2018-11-28 12:00:36,439 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:36,459 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 25 [2018-11-28 12:00:36,459 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:36,468 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-28 12:00:36,481 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:36,481 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:49, output treesize:29 [2018-11-28 12:00:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:36,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:00:36,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2018-11-28 12:00:36,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 12:00:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 12:00:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2018-11-28 12:00:36,530 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 22 states. [2018-11-28 12:00:39,644 WARN L180 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-28 12:00:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:39,968 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-11-28 12:00:39,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 12:00:39,968 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 26 [2018-11-28 12:00:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:39,968 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:00:39,968 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 12:00:39,969 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=126, Invalid=865, Unknown=1, NotChecked=0, Total=992 [2018-11-28 12:00:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 12:00:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 12:00:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 12:00:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-11-28 12:00:39,971 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 26 [2018-11-28 12:00:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:39,971 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-11-28 12:00:39,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 12:00:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-11-28 12:00:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 12:00:39,971 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:39,972 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:39,972 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:39,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:39,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1486892371, now seen corresponding path program 1 times [2018-11-28 12:00:39,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:39,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:39,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:39,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:39,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:40,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:40,037 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:40,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:40,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:00:40,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 12:00:40,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:00:40,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:00:40,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:00:40,097 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2018-11-28 12:00:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:40,139 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-11-28 12:00:40,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:00:40,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-11-28 12:00:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:40,140 INFO L225 Difference]: With dead ends: 42 [2018-11-28 12:00:40,140 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 12:00:40,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:00:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 12:00:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 12:00:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:00:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-11-28 12:00:40,142 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 28 [2018-11-28 12:00:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:40,142 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-11-28 12:00:40,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:00:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-11-28 12:00:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 12:00:40,142 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:40,142 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:40,142 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:40,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:40,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1320818060, now seen corresponding path program 1 times [2018-11-28 12:00:40,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:40,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:40,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:40,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:40,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:40,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:40,244 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:40,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:40,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:00:40,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2018-11-28 12:00:40,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:00:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:00:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:00:40,311 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 13 states. [2018-11-28 12:00:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:40,424 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-28 12:00:40,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:00:40,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-11-28 12:00:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:40,425 INFO L225 Difference]: With dead ends: 39 [2018-11-28 12:00:40,425 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:00:40,426 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-11-28 12:00:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:00:40,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-28 12:00:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 12:00:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-28 12:00:40,427 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2018-11-28 12:00:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:40,427 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-28 12:00:40,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:00:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-28 12:00:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 12:00:40,428 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:40,428 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:40,428 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:40,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:40,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2024428204, now seen corresponding path program 1 times [2018-11-28 12:00:40,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:40,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:40,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:40,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:40,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:40,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:40,630 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:40,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:40,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:40,685 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 12:00:40,688 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 12:00:40,688 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,691 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,698 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-28 12:00:40,698 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,703 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2018-11-28 12:00:40,720 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-28 12:00:40,722 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-28 12:00:40,722 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,723 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,727 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-28 12:00:40,746 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 29 [2018-11-28 12:00:40,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-11-28 12:00:40,747 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,750 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-28 12:00:40,754 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2018-11-28 12:00:40,944 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2018-11-28 12:00:40,950 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2018-11-28 12:00:40,950 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:40,960 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2018-11-28 12:00:40,960 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:40,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:40,969 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:40,970 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2018-11-28 12:00:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:41,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:00:41,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2018-11-28 12:00:41,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 12:00:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 12:00:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2018-11-28 12:00:41,030 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 23 states. [2018-11-28 12:00:46,853 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-28 12:00:50,919 WARN L180 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-11-28 12:00:54,681 WARN L180 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-11-28 12:00:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:54,688 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-11-28 12:00:54,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 12:00:54,688 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2018-11-28 12:00:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:54,688 INFO L225 Difference]: With dead ends: 45 [2018-11-28 12:00:54,688 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 12:00:54,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 12:00:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 12:00:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2018-11-28 12:00:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 12:00:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-28 12:00:54,691 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-28 12:00:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:54,691 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-28 12:00:54,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 12:00:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-28 12:00:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 12:00:54,692 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:54,692 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:54,692 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:54,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 144680469, now seen corresponding path program 2 times [2018-11-28 12:00:54,692 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:54,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:54,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:54,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:00:54,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:55,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:55,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:55,198 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:00:55,214 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:00:55,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:00:55,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:55,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-28 12:00:55,255 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-11-28 12:00:55,255 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:55,257 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:55,261 INFO L267 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. [2018-11-28 12:00:55,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2018-11-28 12:00:55,944 INFO L478 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 52 treesize of output 46 [2018-11-28 12:00:55,949 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:00:55,950 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:00:55,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 72 [2018-11-28 12:00:55,966 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-28 12:00:56,001 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 28 [2018-11-28 12:00:56,001 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:56,020 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:00:56,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 39 [2018-11-28 12:00:56,024 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:56,039 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-28 12:00:56,054 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-28 12:00:56,054 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:70, output treesize:72 [2018-11-28 12:00:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:56,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:00:56,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 32 [2018-11-28 12:00:56,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-28 12:00:56,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-28 12:00:56,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2018-11-28 12:00:56,121 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 33 states. [2018-11-28 12:00:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:57,504 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-28 12:00:57,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 12:00:57,505 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 34 [2018-11-28 12:00:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:57,505 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:00:57,505 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 12:00:57,505 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=213, Invalid=2237, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 12:00:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 12:00:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-28 12:00:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 12:00:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-11-28 12:00:57,507 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2018-11-28 12:00:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:57,507 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-11-28 12:00:57,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-28 12:00:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-28 12:00:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 12:00:57,508 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:00:57,508 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:00:57,508 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION]=== [2018-11-28 12:00:57,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:00:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash -357120264, now seen corresponding path program 3 times [2018-11-28 12:00:57,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:00:57,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:00:57,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:57,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:00:57,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:00:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:00:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:57,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:00:57,932 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:00:57,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:00:57,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 12:00:57,962 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:00:57,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:00:57,967 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 12:00:57,973 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 12:00:57,973 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:57,978 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:57,985 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:57,985 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:28 [2018-11-28 12:00:57,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 12:00:57,991 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-11-28 12:00:57,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:57,992 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:57,995 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:00:57,995 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-11-28 12:00:58,167 INFO L478 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 30 treesize of output 30 [2018-11-28 12:00:58,173 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2018-11-28 12:00:58,174 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:58,184 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2018-11-28 12:00:58,185 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:58,186 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2018-11-28 12:00:58,186 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:00:58,197 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-11-28 12:00:58,197 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-28 12:00:58,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:58,206 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:00:58,207 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:38, output treesize:30 [2018-11-28 12:00:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:00:58,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:00:58,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2018-11-28 12:00:58,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-28 12:00:58,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-28 12:00:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2018-11-28 12:00:58,282 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 29 states. [2018-11-28 12:00:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:00:59,442 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-11-28 12:00:59,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-28 12:00:59,443 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 42 [2018-11-28 12:00:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:00:59,443 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:00:59,443 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:00:59,444 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=413, Invalid=2893, Unknown=0, NotChecked=0, Total=3306 [2018-11-28 12:00:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:00:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:00:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:00:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:00:59,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-28 12:00:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:00:59,445 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:00:59,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-28 12:00:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:00:59,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:00:59,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:00:59 BoogieIcfgContainer [2018-11-28 12:00:59,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:00:59,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:00:59,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:00:59,450 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:00:59,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:00:33" (3/4) ... [2018-11-28 12:00:59,454 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:00:59,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:00:59,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 12:00:59,461 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 12:00:59,461 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:00:59,461 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrncmp [2018-11-28 12:00:59,464 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-28 12:00:59,465 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 12:00:59,465 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:00:59,495 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f73dc7ee-7bda-4452-a010-2a1a3770e83b/bin-2019/uautomizer/witness.graphml [2018-11-28 12:00:59,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:00:59,496 INFO L168 Benchmark]: Toolchain (without parser) took 27188.07 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 949.5 MB in the beginning and 844.3 MB in the end (delta: 105.2 MB). Peak memory consumption was 349.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:00:59,497 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:00:59,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:00:59,497 INFO L168 Benchmark]: Boogie Preprocessor took 37.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:00:59,497 INFO L168 Benchmark]: RCFGBuilder took 343.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:00:59,498 INFO L168 Benchmark]: TraceAbstraction took 26437.32 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 131.1 MB). Free memory was 1.1 GB in the beginning and 844.3 MB in the end (delta: 208.9 MB). Peak memory consumption was 340.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:00:59,498 INFO L168 Benchmark]: Witness Printer took 45.88 ms. Allocated memory is still 1.3 GB. Free memory is still 844.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:00:59,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 343.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26437.32 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 131.1 MB). Free memory was 1.1 GB in the beginning and 844.3 MB in the end (delta: 208.9 MB). Peak memory consumption was 340.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.88 ms. Allocated memory is still 1.3 GB. Free memory is still 844.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 565]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 564]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 56 locations, 15 error locations. SAFE Result, 26.3s OverallTime, 21 OverallIterations, 4 TraceHistogramMax, 21.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 586 SDtfs, 925 SDslu, 2427 SDs, 0 SdLazy, 2722 SolverSat, 164 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 483 GetRequests, 174 SyntacticMatches, 8 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 21 MinimizatonAttempts, 38 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 641 ConstructedInterpolants, 45 QuantifiedInterpolants, 201165 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1222 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 20/141 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...