./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/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_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 60847b137b78d6fc8305d5c5fcc8bf5228130e36 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:38:33,505 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:38:33,506 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:38:33,514 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:38:33,514 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:38:33,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:38:33,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:38:33,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:38:33,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:38:33,518 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:38:33,519 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:38:33,519 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:38:33,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:38:33,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:38:33,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:38:33,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:38:33,522 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:38:33,523 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:38:33,524 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:38:33,525 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:38:33,526 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:38:33,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:38:33,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:38:33,529 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:38:33,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:38:33,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:38:33,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:38:33,530 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:38:33,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:38:33,532 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:38:33,532 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:38:33,532 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:38:33,532 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:38:33,533 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:38:33,533 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:38:33,534 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:38:33,534 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 11:38:33,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:38:33,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:38:33,544 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:38:33,544 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:38:33,544 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:38:33,545 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:38:33,545 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:38:33,546 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:38:33,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:38:33,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:38:33,547 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:38:33,548 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:38:33,548 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_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 -> 60847b137b78d6fc8305d5c5fcc8bf5228130e36 [2018-11-28 11:38:33,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:38:33,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:38:33,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:38:33,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:38:33,581 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:38:33,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:38:33,617 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/data/cfba6a49d/59d686e94d8446558e32f2956d2bab3e/FLAG099d54870 [2018-11-28 11:38:33,944 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:38:33,945 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/sv-benchmarks/c/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:38:33,950 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/data/cfba6a49d/59d686e94d8446558e32f2956d2bab3e/FLAG099d54870 [2018-11-28 11:38:33,960 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/data/cfba6a49d/59d686e94d8446558e32f2956d2bab3e [2018-11-28 11:38:33,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:38:33,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 11:38:33,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:38:33,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:38:33,966 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:38:33,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:33" (1/1) ... [2018-11-28 11:38:33,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e46db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:33, skipping insertion in model container [2018-11-28 11:38:33,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:38:33" (1/1) ... [2018-11-28 11:38:33,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:38:33,998 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:38:34,171 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:38:34,218 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:38:34,248 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:38:34,279 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:38:34,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34 WrapperNode [2018-11-28 11:38:34,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:38:34,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:38:34,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:38:34,280 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:38:34,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... [2018-11-28 11:38:34,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:38:34,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:38:34,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:38:34,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:38:34,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-11-28 11:38:34,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:38:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 11:38:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 11:38:34,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 11:38:34,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 11:38:34,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 11:38:34,360 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 11:38:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 11:38:34,362 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 11:38:34,363 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 11:38:34,364 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 11:38:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 11:38:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:38:34,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:38:34,720 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:38:34,720 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 11:38:34,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:34 BoogieIcfgContainer [2018-11-28 11:38:34,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:38:34,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:38:34,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:38:34,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:38:34,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:38:33" (1/3) ... [2018-11-28 11:38:34,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7a115f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:38:34, skipping insertion in model container [2018-11-28 11:38:34,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:38:34" (2/3) ... [2018-11-28 11:38:34,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7a115f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:38:34, skipping insertion in model container [2018-11-28 11:38:34,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:34" (3/3) ... [2018-11-28 11:38:34,726 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-11-28 11:38:34,732 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:38:34,738 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 11:38:34,753 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 11:38:34,771 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:38:34,772 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:38:34,772 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 11:38:34,772 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:38:34,772 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:38:34,772 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:38:34,772 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:38:34,772 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:38:34,772 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:38:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-11-28 11:38:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:38:34,789 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:34,789 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:34,791 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:34,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:34,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1848846346, now seen corresponding path program 1 times [2018-11-28 11:38:34,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:34,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:34,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:34,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:34,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:34,920 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 11:38:34,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:34,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:38:34,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:38:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:38:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:38:34,934 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2018-11-28 11:38:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,000 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-11-28 11:38:35,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:38:35,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 11:38:35,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,009 INFO L225 Difference]: With dead ends: 52 [2018-11-28 11:38:35,009 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 11:38:35,010 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 11:38:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 11:38:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-28 11:38:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 11:38:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-11-28 11:38:35,041 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 10 [2018-11-28 11:38:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,042 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-11-28 11:38:35,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:38:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-11-28 11:38:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 11:38:35,042 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,042 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:35,043 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1848846347, now seen corresponding path program 1 times [2018-11-28 11:38:35,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,105 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 11:38:35,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:35,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:38:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:38:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:38:35,108 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 4 states. [2018-11-28 11:38:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,139 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-11-28 11:38:35,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:38:35,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 11:38:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,141 INFO L225 Difference]: With dead ends: 48 [2018-11-28 11:38:35,141 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 11:38:35,141 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 11:38:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 11:38:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-28 11:38:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 11:38:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-11-28 11:38:35,147 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 10 [2018-11-28 11:38:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,147 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-11-28 11:38:35,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:38:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-11-28 11:38:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:38:35,148 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,148 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:35,148 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1479661869, now seen corresponding path program 1 times [2018-11-28 11:38:35,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,173 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 11:38:35,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:38:35,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:38:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:38:35,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:38:35,174 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 3 states. [2018-11-28 11:38:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,192 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-11-28 11:38:35,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:38:35,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 11:38:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,193 INFO L225 Difference]: With dead ends: 47 [2018-11-28 11:38:35,193 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 11:38:35,193 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 11:38:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 11:38:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-28 11:38:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 11:38:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-11-28 11:38:35,196 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 11 [2018-11-28 11:38:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,196 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-11-28 11:38:35,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:38:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-11-28 11:38:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:38:35,196 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,196 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:35,197 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1479661870, now seen corresponding path program 1 times [2018-11-28 11:38:35,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,239 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 11:38:35,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:35,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:38:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:38:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:38:35,240 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2018-11-28 11:38:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,259 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 11:38:35,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:38:35,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 11:38:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,259 INFO L225 Difference]: With dead ends: 46 [2018-11-28 11:38:35,259 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 11:38:35,260 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 11:38:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 11:38:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-28 11:38:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 11:38:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-11-28 11:38:35,262 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 11 [2018-11-28 11:38:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,262 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-11-28 11:38:35,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:38:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-11-28 11:38:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 11:38:35,263 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,263 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 11:38:35,263 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1847391341, now seen corresponding path program 1 times [2018-11-28 11:38:35,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,297 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 11:38:35,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:38:35,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:38:35,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:38:35,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:38:35,298 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2018-11-28 11:38:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,367 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-11-28 11:38:35,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:38:35,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-28 11:38:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,368 INFO L225 Difference]: With dead ends: 43 [2018-11-28 11:38:35,368 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 11:38:35,369 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 11:38:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 11:38:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 11:38:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 11:38:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 11:38:35,373 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 18 [2018-11-28 11:38:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,373 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 11:38:35,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:38:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 11:38:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 11:38:35,374 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,374 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 11:38:35,374 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1847391340, now seen corresponding path program 1 times [2018-11-28 11:38:35,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,466 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 11:38:35,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 11:38:35,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:38:35,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:38:35,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:38:35,468 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2018-11-28 11:38:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,541 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-11-28 11:38:35,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:38:35,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-11-28 11:38:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,543 INFO L225 Difference]: With dead ends: 65 [2018-11-28 11:38:35,544 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 11:38:35,544 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 11:38:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 11:38:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-11-28 11:38:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 11:38:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-28 11:38:35,548 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 18 [2018-11-28 11:38:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,548 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-28 11:38:35,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:38:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2018-11-28 11:38:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:38:35,549 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,549 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 11:38:35,549 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1433910531, now seen corresponding path program 1 times [2018-11-28 11:38:35,549 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,608 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 11:38:35,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:35,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:38:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:38:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:38:35,609 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 4 states. [2018-11-28 11:38:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,663 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-11-28 11:38:35,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:38:35,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 11:38:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,664 INFO L225 Difference]: With dead ends: 51 [2018-11-28 11:38:35,664 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 11:38:35,664 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 11:38:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 11:38:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 11:38:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 11:38:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 11:38:35,666 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 19 [2018-11-28 11:38:35,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,667 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 11:38:35,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:38:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 11:38:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:38:35,667 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,667 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 11:38:35,668 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1434556706, now seen corresponding path program 1 times [2018-11-28 11:38:35,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,710 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 11:38:35,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:38:35,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:38:35,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:38:35,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:38:35,712 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2018-11-28 11:38:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,749 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-28 11:38:35,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:38:35,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 11:38:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,750 INFO L225 Difference]: With dead ends: 42 [2018-11-28 11:38:35,750 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 11:38:35,750 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 11:38:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 11:38:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-28 11:38:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:38:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-11-28 11:38:35,753 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 19 [2018-11-28 11:38:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,754 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-11-28 11:38:35,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:38:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-11-28 11:38:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 11:38:35,754 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,754 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 11:38:35,755 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1434556705, now seen corresponding path program 1 times [2018-11-28 11:38:35,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,816 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 11:38:35,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 11:38:35,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 11:38:35,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 11:38:35,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:38:35,816 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 7 states. [2018-11-28 11:38:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,864 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-11-28 11:38:35,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 11:38:35,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 11:38:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,866 INFO L225 Difference]: With dead ends: 46 [2018-11-28 11:38:35,866 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 11:38:35,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 11:38:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 11:38:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-11-28 11:38:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 11:38:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 11:38:35,868 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 19 [2018-11-28 11:38:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,868 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 11:38:35,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 11:38:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 11:38:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:38:35,869 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,869 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:35,869 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash -639091287, now seen corresponding path program 1 times [2018-11-28 11:38:35,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:35,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:35,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:38:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:38:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:38:35,893 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 3 states. [2018-11-28 11:38:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,899 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-11-28 11:38:35,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:38:35,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-28 11:38:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,901 INFO L225 Difference]: With dead ends: 43 [2018-11-28 11:38:35,901 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 11:38:35,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:38:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 11:38:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-28 11:38:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:38:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-11-28 11:38:35,903 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 23 [2018-11-28 11:38:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,903 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-11-28 11:38:35,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:38:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-11-28 11:38:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 11:38:35,904 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,904 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 11:38:35,904 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1282682171, now seen corresponding path program 1 times [2018-11-28 11:38:35,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:35,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:35,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:38:35,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:38:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:38:35,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:38:35,944 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 3 states. [2018-11-28 11:38:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:35,949 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-11-28 11:38:35,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:38:35,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-28 11:38:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:35,950 INFO L225 Difference]: With dead ends: 43 [2018-11-28 11:38:35,950 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 11:38:35,950 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:38:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 11:38:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-28 11:38:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:38:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-11-28 11:38:35,953 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2018-11-28 11:38:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:35,953 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-11-28 11:38:35,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:38:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-11-28 11:38:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 11:38:35,954 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:35,954 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, 1, 1] [2018-11-28 11:38:35,954 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:35,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1573721152, now seen corresponding path program 1 times [2018-11-28 11:38:35,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:35,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:35,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:35,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:36,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:38:36,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-28 11:38:36,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 11:38:36,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 11:38:36,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:38:36,057 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2018-11-28 11:38:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:36,134 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-11-28 11:38:36,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 11:38:36,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-11-28 11:38:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:36,136 INFO L225 Difference]: With dead ends: 60 [2018-11-28 11:38:36,136 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 11:38:36,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-11-28 11:38:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 11:38:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-28 11:38:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 11:38:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-11-28 11:38:36,139 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 28 [2018-11-28 11:38:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:36,142 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-11-28 11:38:36,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 11:38:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-11-28 11:38:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 11:38:36,143 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:36,143 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, 1, 1] [2018-11-28 11:38:36,143 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:36,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1792575870, now seen corresponding path program 1 times [2018-11-28 11:38:36,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:36,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:36,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:36,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:36,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:36,300 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 11:38:36,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:38:36,300 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 11:38:36,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:36,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:36,410 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 11:38:36,414 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 11:38:36,415 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,416 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,418 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,418 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-11-28 11:38:36,595 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 11:38:36,597 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 11:38:36,598 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,609 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 11:38:36,609 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,616 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 11:38:36,617 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,627 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:36,629 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 11:38:36,629 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-11-28 11:38:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:36,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 11:38:36,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2018-11-28 11:38:36,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 11:38:36,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 11:38:36,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-11-28 11:38:36,674 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 20 states. [2018-11-28 11:38:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:37,250 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-11-28 11:38:37,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 11:38:37,250 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2018-11-28 11:38:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:37,251 INFO L225 Difference]: With dead ends: 77 [2018-11-28 11:38:37,251 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 11:38:37,251 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 11:38:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 11:38:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2018-11-28 11:38:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 11:38:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-11-28 11:38:37,254 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 28 [2018-11-28 11:38:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:37,254 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-11-28 11:38:37,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 11:38:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-11-28 11:38:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 11:38:37,255 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:37,255 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] [2018-11-28 11:38:37,256 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:37,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash -45868173, now seen corresponding path program 1 times [2018-11-28 11:38:37,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:37,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:37,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:37,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:37,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:37,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:38:37,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 11:38:37,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:37,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:37,510 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 11:38:37,514 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 11:38:37,514 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:37,522 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:37,528 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 11:38:37,528 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-11-28 11:38:37,788 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 29 treesize of output 29 [2018-11-28 11:38:37,792 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 25 treesize of output 18 [2018-11-28 11:38:37,793 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:37,805 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 18 treesize of output 16 [2018-11-28 11:38:37,806 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:37,829 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 21 treesize of output 23 [2018-11-28 11:38:37,829 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:37,838 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-28 11:38:37,854 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 11:38:37,854 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:45, output treesize:33 [2018-11-28 11:38:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:37,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:38:37,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-11-28 11:38:37,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 11:38:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 11:38:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2018-11-28 11:38:37,925 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 23 states. [2018-11-28 11:38:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:38,557 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-11-28 11:38:38,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 11:38:38,557 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2018-11-28 11:38:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:38,557 INFO L225 Difference]: With dead ends: 58 [2018-11-28 11:38:38,558 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 11:38:38,558 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2018-11-28 11:38:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 11:38:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-11-28 11:38:38,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 11:38:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-11-28 11:38:38,560 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 29 [2018-11-28 11:38:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:38,560 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-11-28 11:38:38,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 11:38:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-11-28 11:38:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:38:38,561 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:38,561 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:38:38,561 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:38,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 916932140, now seen corresponding path program 1 times [2018-11-28 11:38:38,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:38,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:38,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:38,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:38,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:38,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:38:38,764 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 11:38:38,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:38,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:38,803 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 11:38:38,805 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 11:38:38,806 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,821 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 11:38:38,821 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,826 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2018-11-28 11:38:38,851 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 11:38:38,853 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 11:38:38,853 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,860 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-11-28 11:38:38,881 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 11:38:38,886 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 11:38:38,887 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,892 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:38,898 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 11:38:38,898 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2018-11-28 11:38:39,076 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 31 treesize of output 29 [2018-11-28 11:38:39,082 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 11:38:39,082 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:39,087 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 11:38:39,087 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:39,090 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:38:39,095 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 11:38:39,095 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:45, output treesize:34 [2018-11-28 11:38:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:39,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:38:39,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2018-11-28 11:38:39,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 11:38:39,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 11:38:39,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-11-28 11:38:39,167 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 21 states. [2018-11-28 11:38:41,416 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-11-28 11:38:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:41,820 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-28 11:38:41,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 11:38:41,821 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2018-11-28 11:38:41,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:41,821 INFO L225 Difference]: With dead ends: 51 [2018-11-28 11:38:41,821 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 11:38:41,822 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2018-11-28 11:38:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 11:38:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-28 11:38:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 11:38:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-11-28 11:38:41,824 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 38 [2018-11-28 11:38:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:41,825 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-11-28 11:38:41,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 11:38:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-11-28 11:38:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 11:38:41,825 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:38:41,826 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 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 11:38:41,826 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-11-28 11:38:41,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:38:41,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1639874745, now seen corresponding path program 2 times [2018-11-28 11:38:41,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:38:41,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:38:41,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:41,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:38:41,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:38:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:38:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:42,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:38:42,137 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/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 11:38:42,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:38:42,163 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:38:42,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:38:42,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:38:42,168 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 11:38:42,183 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 11:38:42,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:42,195 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 11:38:42,203 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:42,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2018-11-28 11:38:42,212 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 11:38:42,213 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 11:38:42,214 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:42,216 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:42,219 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 11:38:42,219 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-11-28 11:38:42,399 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 11:38:42,414 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 22 treesize of output 25 [2018-11-28 11:38:42,414 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:42,426 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 26 treesize of output 19 [2018-11-28 11:38:42,426 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 11:38:42,439 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 19 treesize of output 17 [2018-11-28 11:38:42,440 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-28 11:38:42,448 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-28 11:38:42,459 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 11:38:42,460 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:40, output treesize:34 [2018-11-28 11:38:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:38:42,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:38:42,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-11-28 11:38:42,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 11:38:42,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 11:38:42,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-11-28 11:38:42,538 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-11-28 11:38:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:38:43,277 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-11-28 11:38:43,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 11:38:43,277 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 39 [2018-11-28 11:38:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:38:43,277 INFO L225 Difference]: With dead ends: 49 [2018-11-28 11:38:43,277 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:38:43,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=1391, Unknown=0, NotChecked=0, Total=1640 [2018-11-28 11:38:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:38:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:38:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:38:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:38:43,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-11-28 11:38:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:38:43,279 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:38:43,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 11:38:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:38:43,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:38:43,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:38:43 BoogieIcfgContainer [2018-11-28 11:38:43,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:38:43,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:38:43,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:38:43,282 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:38:43,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:38:34" (3/4) ... [2018-11-28 11:38:43,285 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:38:43,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:38:43,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 11:38:43,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 11:38:43,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:38:43,290 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrncmp [2018-11-28 11:38:43,294 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-28 11:38:43,294 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 11:38:43,294 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 11:38:43,328 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1dbd18fe-014d-475b-ae69-0c0178cbca2b/bin-2019/uautomizer/witness.graphml [2018-11-28 11:38:43,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:38:43,329 INFO L168 Benchmark]: Toolchain (without parser) took 9366.69 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 334.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 157.0 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:43,329 INFO L168 Benchmark]: CDTParser took 0.10 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 11:38:43,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -199.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:43,330 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:43,330 INFO L168 Benchmark]: RCFGBuilder took 403.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:43,330 INFO L168 Benchmark]: TraceAbstraction took 8560.70 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.7 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:38:43,330 INFO L168 Benchmark]: Witness Printer took 46.12 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:38:43,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 316.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -199.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 403.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8560.70 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -29.7 MB). Peak memory consumption was 142.8 MB. Max. memory is 11.5 GB. * Witness Printer took 46.12 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 567]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 566]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 566]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: 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: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 551]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: 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, 59 locations, 15 error locations. SAFE Result, 8.5s OverallTime, 16 OverallIterations, 3 TraceHistogramMax, 5.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 565 SDtfs, 827 SDslu, 1953 SDs, 0 SdLazy, 1778 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 108 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=13, 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, 16 MinimizatonAttempts, 27 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 480 NumberOfCodeBlocks, 480 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 460 ConstructedInterpolants, 38 QuantifiedInterpolants, 155916 SizeOfPredicates, 44 NumberOfNonLiveVariables, 638 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 27/90 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...