./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 0.1.23-635dfa2 [2018-12-08 23:38:56,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:38:56,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:38:56,731 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:38:56,731 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:38:56,732 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:38:56,733 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:38:56,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:38:56,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:38:56,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:38:56,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:38:56,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:38:56,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:38:56,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:38:56,737 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:38:56,737 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:38:56,737 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:38:56,738 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:38:56,739 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:38:56,740 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:38:56,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:38:56,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:38:56,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:38:56,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:38:56,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:38:56,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:38:56,743 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:38:56,744 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:38:56,744 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:38:56,745 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:38:56,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:38:56,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:38:56,745 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:38:56,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:38:56,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:38:56,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:38:56,746 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-08 23:38:56,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:38:56,753 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:38:56,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 23:38:56,754 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 23:38:56,754 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 23:38:56,754 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 23:38:56,754 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 23:38:56,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 23:38:56,755 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:38:56,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 23:38:56,756 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 23:38:56,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 23:38:56,756 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_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:38:56,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:38:56,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:38:56,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:38:56,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:38:56,784 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:38:56,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-12-08 23:38:56,819 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/data/788775ad6/47db7364864240f68df044b4118d5ef6/FLAGe8e300019 [2018-12-08 23:38:57,245 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:38:57,246 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/sv-benchmarks/c/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-12-08 23:38:57,252 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/data/788775ad6/47db7364864240f68df044b4118d5ef6/FLAGe8e300019 [2018-12-08 23:38:57,261 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/data/788775ad6/47db7364864240f68df044b4118d5ef6 [2018-12-08 23:38:57,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:38:57,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 23:38:57,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:38:57,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:38:57,266 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:38:57,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fe4f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57, skipping insertion in model container [2018-12-08 23:38:57,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:38:57,291 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:38:57,434 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:38:57,440 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:38:57,503 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:38:57,525 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:38:57,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57 WrapperNode [2018-12-08 23:38:57,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:38:57,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:38:57,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:38:57,526 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:38:57,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... [2018-12-08 23:38:57,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:38:57,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:38:57,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:38:57,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:38:57,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-12-08 23:38:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-08 23:38:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-08 23:38:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-08 23:38:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-08 23:38:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-08 23:38:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-08 23:38:57,600 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-08 23:38:57,601 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 23:38:57,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:38:57,819 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:38:57,819 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 23:38:57,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:38:57 BoogieIcfgContainer [2018-12-08 23:38:57,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:38:57,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 23:38:57,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 23:38:57,821 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 23:38:57,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 11:38:57" (1/3) ... [2018-12-08 23:38:57,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3b95b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:38:57, skipping insertion in model container [2018-12-08 23:38:57,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:38:57" (2/3) ... [2018-12-08 23:38:57,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3b95b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 11:38:57, skipping insertion in model container [2018-12-08 23:38:57,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:38:57" (3/3) ... [2018-12-08 23:38:57,823 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-12-08 23:38:57,829 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 23:38:57,833 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-12-08 23:38:57,845 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-12-08 23:38:57,860 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:38:57,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 23:38:57,860 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 23:38:57,860 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 23:38:57,860 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:38:57,860 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:38:57,861 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 23:38:57,861 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:38:57,861 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 23:38:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-12-08 23:38:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 23:38:57,874 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:57,875 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:57,876 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:57,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1848846346, now seen corresponding path program 1 times [2018-12-08 23:38:57,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:57,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:57,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:57,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:57,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:57,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:57,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:38:57,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:38:58,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:38:58,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:38:58,003 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2018-12-08 23:38:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,036 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-12-08 23:38:58,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:38:58,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 23:38:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,043 INFO L225 Difference]: With dead ends: 52 [2018-12-08 23:38:58,043 INFO L226 Difference]: Without dead ends: 49 [2018-12-08 23:38:58,044 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 [2018-12-08 23:38:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-08 23:38:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-12-08 23:38:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-08 23:38:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-12-08 23:38:58,064 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 10 [2018-12-08 23:38:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,064 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-12-08 23:38:58,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:38:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-12-08 23:38:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 23:38:58,064 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,064 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,065 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1848846347, now seen corresponding path program 1 times [2018-12-08 23:38:58,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:38:58,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 23:38:58,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 23:38:58,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 23:38:58,104 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 4 states. [2018-12-08 23:38:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,118 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-08 23:38:58,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 23:38:58,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-12-08 23:38:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,119 INFO L225 Difference]: With dead ends: 48 [2018-12-08 23:38:58,120 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 23:38:58,120 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 [2018-12-08 23:38:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 23:38:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-12-08 23:38:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-08 23:38:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-12-08 23:38:58,123 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 10 [2018-12-08 23:38:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,123 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-12-08 23:38:58,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 23:38:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-12-08 23:38:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 23:38:58,124 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,124 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,124 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1479661869, now seen corresponding path program 1 times [2018-12-08 23:38:58,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 23:38:58,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:38:58,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:38:58,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:38:58,143 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 3 states. [2018-12-08 23:38:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,164 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-12-08 23:38:58,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:38:58,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-08 23:38:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,164 INFO L225 Difference]: With dead ends: 47 [2018-12-08 23:38:58,164 INFO L226 Difference]: Without dead ends: 47 [2018-12-08 23:38:58,165 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 [2018-12-08 23:38:58,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-08 23:38:58,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-12-08 23:38:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-08 23:38:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-12-08 23:38:58,167 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 11 [2018-12-08 23:38:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,167 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-12-08 23:38:58,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:38:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-12-08 23:38:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 23:38:58,167 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,167 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,168 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1479661870, now seen corresponding path program 1 times [2018-12-08 23:38:58,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:38:58,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 23:38:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 23:38:58,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 23:38:58,203 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2018-12-08 23:38:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,212 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-08 23:38:58,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 23:38:58,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-08 23:38:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,213 INFO L225 Difference]: With dead ends: 46 [2018-12-08 23:38:58,213 INFO L226 Difference]: Without dead ends: 46 [2018-12-08 23:38:58,213 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 [2018-12-08 23:38:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-08 23:38:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-12-08 23:38:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-08 23:38:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-12-08 23:38:58,215 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 11 [2018-12-08 23:38:58,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,215 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-12-08 23:38:58,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 23:38:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-12-08 23:38:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 23:38:58,216 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,216 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1847391341, now seen corresponding path program 1 times [2018-12-08 23:38:58,216 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 23:38:58,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 23:38:58,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 23:38:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 23:38:58,250 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2018-12-08 23:38:58,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,288 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-12-08 23:38:58,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 23:38:58,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-08 23:38:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,289 INFO L225 Difference]: With dead ends: 43 [2018-12-08 23:38:58,289 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 23:38:58,290 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 [2018-12-08 23:38:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 23:38:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-08 23:38:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 23:38:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-08 23:38:58,292 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 18 [2018-12-08 23:38:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,292 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-08 23:38:58,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 23:38:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-08 23:38:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 23:38:58,293 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,293 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,293 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1847391340, now seen corresponding path program 1 times [2018-12-08 23:38:58,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 23:38:58,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 23:38:58,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 23:38:58,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-08 23:38:58,355 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2018-12-08 23:38:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,415 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-12-08 23:38:58,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 23:38:58,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-12-08 23:38:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,417 INFO L225 Difference]: With dead ends: 65 [2018-12-08 23:38:58,417 INFO L226 Difference]: Without dead ends: 65 [2018-12-08 23:38:58,417 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 [2018-12-08 23:38:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-08 23:38:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-12-08 23:38:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-08 23:38:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-12-08 23:38:58,421 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 18 [2018-12-08 23:38:58,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,421 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-12-08 23:38:58,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 23:38:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2018-12-08 23:38:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 23:38:58,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,422 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,422 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1433910531, now seen corresponding path program 1 times [2018-12-08 23:38:58,422 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:38:58,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 23:38:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 23:38:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 23:38:58,465 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 4 states. [2018-12-08 23:38:58,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,512 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-12-08 23:38:58,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 23:38:58,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-12-08 23:38:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,513 INFO L225 Difference]: With dead ends: 51 [2018-12-08 23:38:58,513 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 23:38:58,513 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 [2018-12-08 23:38:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 23:38:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 23:38:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 23:38:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 23:38:58,515 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 19 [2018-12-08 23:38:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,515 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 23:38:58,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 23:38:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 23:38:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 23:38:58,516 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,516 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,516 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1434556706, now seen corresponding path program 1 times [2018-12-08 23:38:58,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 23:38:58,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 23:38:58,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 23:38:58,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 23:38:58,549 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2018-12-08 23:38:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,576 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-12-08 23:38:58,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 23:38:58,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-08 23:38:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,576 INFO L225 Difference]: With dead ends: 42 [2018-12-08 23:38:58,576 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 23:38:58,577 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 [2018-12-08 23:38:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 23:38:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-08 23:38:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 23:38:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-12-08 23:38:58,578 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 19 [2018-12-08 23:38:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,579 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-12-08 23:38:58,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 23:38:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-12-08 23:38:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-08 23:38:58,579 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,579 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 23:38:58,579 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1434556705, now seen corresponding path program 1 times [2018-12-08 23:38:58,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 23:38:58,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 23:38:58,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 23:38:58,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-08 23:38:58,623 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 7 states. [2018-12-08 23:38:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,665 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-12-08 23:38:58,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 23:38:58,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-08 23:38:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,666 INFO L225 Difference]: With dead ends: 46 [2018-12-08 23:38:58,666 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 23:38:58,666 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 [2018-12-08 23:38:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 23:38:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-12-08 23:38:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 23:38:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-08 23:38:58,668 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 19 [2018-12-08 23:38:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,669 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-08 23:38:58,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 23:38:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-08 23:38:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 23:38:58,669 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,670 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] [2018-12-08 23:38:58,670 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,670 INFO L82 PathProgramCache]: Analyzing trace with hash -639091287, now seen corresponding path program 1 times [2018-12-08 23:38:58,670 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:38:58,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:38:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:38:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:38:58,686 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 3 states. [2018-12-08 23:38:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,690 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-12-08 23:38:58,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:38:58,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-12-08 23:38:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,691 INFO L225 Difference]: With dead ends: 43 [2018-12-08 23:38:58,691 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 23:38:58,692 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 [2018-12-08 23:38:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 23:38:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-08 23:38:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 23:38:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-12-08 23:38:58,694 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 23 [2018-12-08 23:38:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,694 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-12-08 23:38:58,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:38:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-12-08 23:38:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 23:38:58,695 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,695 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] [2018-12-08 23:38:58,695 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1282682171, now seen corresponding path program 1 times [2018-12-08 23:38:58,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 23:38:58,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 23:38:58,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 23:38:58,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 23:38:58,715 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 3 states. [2018-12-08 23:38:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,719 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-12-08 23:38:58,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 23:38:58,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-12-08 23:38:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,720 INFO L225 Difference]: With dead ends: 43 [2018-12-08 23:38:58,720 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 23:38:58,720 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 [2018-12-08 23:38:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 23:38:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-08 23:38:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 23:38:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-12-08 23:38:58,722 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2018-12-08 23:38:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,722 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-12-08 23:38:58,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 23:38:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-12-08 23:38:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 23:38:58,723 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,723 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] [2018-12-08 23:38:58,724 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1573721152, now seen corresponding path program 1 times [2018-12-08 23:38:58,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:58,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 23:38:58,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-08 23:38:58,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 23:38:58,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 23:38:58,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-12-08 23:38:58,829 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2018-12-08 23:38:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:58,912 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-12-08 23:38:58,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 23:38:58,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-08 23:38:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:58,912 INFO L225 Difference]: With dead ends: 60 [2018-12-08 23:38:58,912 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 23:38:58,912 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-12-08 23:38:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 23:38:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-08 23:38:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 23:38:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-12-08 23:38:58,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 28 [2018-12-08 23:38:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:58,914 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-12-08 23:38:58,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 23:38:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-12-08 23:38:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 23:38:58,915 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:58,915 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] [2018-12-08 23:38:58,915 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:58,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1792575870, now seen corresponding path program 1 times [2018-12-08 23:38:58,915 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:58,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:59,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:38:59,044 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:38:59,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:38:59,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:38:59,113 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 [2018-12-08 23:38:59,115 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 [2018-12-08 23:38:59,116 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,117 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,118 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,118 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-12-08 23:38:59,259 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 [2018-12-08 23:38:59,261 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 [2018-12-08 23:38:59,262 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,272 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 [2018-12-08 23:38:59,272 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,279 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 [2018-12-08 23:38:59,279 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,282 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:38:59,283 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-12-08 23:38:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:38:59,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 23:38:59,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2018-12-08 23:38:59,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-08 23:38:59,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-08 23:38:59,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-12-08 23:38:59,332 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 20 states. [2018-12-08 23:38:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:38:59,882 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2018-12-08 23:38:59,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-08 23:38:59,883 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2018-12-08 23:38:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:38:59,883 INFO L225 Difference]: With dead ends: 77 [2018-12-08 23:38:59,883 INFO L226 Difference]: Without dead ends: 60 [2018-12-08 23:38:59,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2018-12-08 23:38:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-08 23:38:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2018-12-08 23:38:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-12-08 23:38:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-12-08 23:38:59,886 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 28 [2018-12-08 23:38:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:38:59,886 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-12-08 23:38:59,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-08 23:38:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-12-08 23:38:59,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-08 23:38:59,887 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:38:59,887 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] [2018-12-08 23:38:59,887 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:38:59,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:38:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash -45868173, now seen corresponding path program 1 times [2018-12-08 23:38:59,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:38:59,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:38:59,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:59,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:38:59,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:38:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:39:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:00,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:39:00,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:39:00,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:39:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:39:00,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:39:00,093 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 [2018-12-08 23:39:00,095 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 [2018-12-08 23:39:00,095 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:00,096 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:00,103 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. [2018-12-08 23:39:00,103 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-12-08 23:39:00,298 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 [2018-12-08 23:39:00,301 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 [2018-12-08 23:39:00,301 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:00,313 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 [2018-12-08 23:39:00,314 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:00,332 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 [2018-12-08 23:39:00,332 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:00,341 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-08 23:39:00,354 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-08 23:39:00,355 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:45, output treesize:33 [2018-12-08 23:39:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:00,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 23:39:00,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-12-08 23:39:00,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-08 23:39:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-08 23:39:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2018-12-08 23:39:00,432 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 23 states. [2018-12-08 23:39:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:39:01,081 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-12-08 23:39:01,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 23:39:01,082 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2018-12-08 23:39:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:39:01,082 INFO L225 Difference]: With dead ends: 58 [2018-12-08 23:39:01,082 INFO L226 Difference]: Without dead ends: 54 [2018-12-08 23:39:01,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2018-12-08 23:39:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-08 23:39:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-12-08 23:39:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-08 23:39:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-12-08 23:39:01,084 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 29 [2018-12-08 23:39:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:39:01,084 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-12-08 23:39:01,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-08 23:39:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-12-08 23:39:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-08 23:39:01,085 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:39:01,085 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] [2018-12-08 23:39:01,085 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:39:01,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:39:01,085 INFO L82 PathProgramCache]: Analyzing trace with hash 916932140, now seen corresponding path program 1 times [2018-12-08 23:39:01,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:39:01,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:39:01,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:39:01,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:39:01,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:39:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:39:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:01,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:39:01,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:39:01,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:39:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:39:01,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:39:01,277 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 [2018-12-08 23:39:01,280 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 [2018-12-08 23:39:01,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,283 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,288 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 [2018-12-08 23:39:01,288 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,292 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:21, output treesize:18 [2018-12-08 23:39:01,309 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 [2018-12-08 23:39:01,311 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 [2018-12-08 23:39:01,311 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,312 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,316 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,316 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2018-12-08 23:39:01,337 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 [2018-12-08 23:39:01,339 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 [2018-12-08 23:39:01,339 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,343 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,347 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. [2018-12-08 23:39:01,347 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2018-12-08 23:39:01,482 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 [2018-12-08 23:39:01,487 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 [2018-12-08 23:39:01,487 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:01,492 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 [2018-12-08 23:39:01,493 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:01,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-08 23:39:01,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-08 23:39:01,500 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:45, output treesize:34 [2018-12-08 23:39:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:01,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 23:39:01,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2018-12-08 23:39:01,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-08 23:39:01,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-08 23:39:01,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-12-08 23:39:01,573 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 21 states. [2018-12-08 23:39:03,872 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-12-08 23:39:06,029 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-12-08 23:39:08,218 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2018-12-08 23:39:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:39:08,230 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-12-08 23:39:08,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 23:39:08,230 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2018-12-08 23:39:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:39:08,230 INFO L225 Difference]: With dead ends: 51 [2018-12-08 23:39:08,230 INFO L226 Difference]: Without dead ends: 51 [2018-12-08 23:39:08,231 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2018-12-08 23:39:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-08 23:39:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-12-08 23:39:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-08 23:39:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-12-08 23:39:08,232 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 38 [2018-12-08 23:39:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:39:08,232 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-12-08 23:39:08,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-08 23:39:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-12-08 23:39:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-08 23:39:08,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 23:39:08,233 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] [2018-12-08 23:39:08,233 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, cstrncmpErr5REQUIRES_VIOLATION, cstrncmpErr0REQUIRES_VIOLATION, cstrncmpErr3REQUIRES_VIOLATION, cstrncmpErr9REQUIRES_VIOLATION, cstrncmpErr4REQUIRES_VIOLATION, cstrncmpErr7REQUIRES_VIOLATION, cstrncmpErr2REQUIRES_VIOLATION, cstrncmpErr8REQUIRES_VIOLATION, cstrncmpErr6REQUIRES_VIOLATION, cstrncmpErr1REQUIRES_VIOLATION]=== [2018-12-08 23:39:08,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:39:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1639874745, now seen corresponding path program 2 times [2018-12-08 23:39:08,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:39:08,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:39:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:39:08,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:39:08,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:39:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:39:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:08,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 23:39:08,464 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/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 [2018-12-08 23:39:08,470 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 23:39:08,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 23:39:08,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 23:39:08,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:39:08,493 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 [2018-12-08 23:39:08,502 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 [2018-12-08 23:39:08,502 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:08,510 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-08 23:39:08,518 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:08,518 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2018-12-08 23:39:08,521 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 [2018-12-08 23:39:08,523 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 [2018-12-08 23:39:08,523 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:08,525 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:08,527 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 23:39:08,527 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-12-08 23:39:08,683 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 [2018-12-08 23:39:08,694 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 [2018-12-08 23:39:08,694 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:08,704 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 [2018-12-08 23:39:08,704 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-08 23:39:08,717 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 [2018-12-08 23:39:08,717 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-08 23:39:08,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-08 23:39:08,735 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-08 23:39:08,735 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:40, output treesize:34 [2018-12-08 23:39:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:39:08,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 23:39:08,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-12-08 23:39:08,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-08 23:39:08,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-08 23:39:08,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-12-08 23:39:08,820 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-12-08 23:39:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 23:39:09,722 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-12-08 23:39:09,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 23:39:09,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 39 [2018-12-08 23:39:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 23:39:09,724 INFO L225 Difference]: With dead ends: 49 [2018-12-08 23:39:09,724 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 23:39:09,724 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 [2018-12-08 23:39:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 23:39:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 23:39:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 23:39:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 23:39:09,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-12-08 23:39:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 23:39:09,725 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:39:09,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-08 23:39:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 23:39:09,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 23:39:09,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 11:39:09 BoogieIcfgContainer [2018-12-08 23:39:09,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 23:39:09,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:39:09,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:39:09,732 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:39:09,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:38:57" (3/4) ... [2018-12-08 23:39:09,736 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 23:39:09,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 23:39:09,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-12-08 23:39:09,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-12-08 23:39:09,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 23:39:09,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrncmp [2018-12-08 23:39:09,750 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-12-08 23:39:09,750 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 23:39:09,750 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 23:39:09,782 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55112a81-c390-47c4-ab4c-5f4146076946/bin-2019/uautomizer/witness.graphml [2018-12-08 23:39:09,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:39:09,782 INFO L168 Benchmark]: Toolchain (without parser) took 12519.31 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 327.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -177.0 MB). Peak memory consumption was 150.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: RCFGBuilder took 257.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: TraceAbstraction took 11911.43 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 178.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.6 MB). Peak memory consumption was 133.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:39:09,783 INFO L168 Benchmark]: Witness Printer took 50.42 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. [2018-12-08 23:39:09,784 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 257.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11911.43 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 178.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.6 MB). Peak memory consumption was 133.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.42 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: 566]: 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: 566]: 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: 546]: 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: 552]: 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: 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 - PositiveResult [Line: 552]: 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, 11.8s OverallTime, 16 OverallIterations, 3 TraceHistogramMax, 9.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 565 SDtfs, 827 SDslu, 1953 SDs, 0 SdLazy, 1778 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 108 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 9.5s 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, 0.1s SatisfiabilityAnalysisTime, 2.2s 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...