./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-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_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/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 f9c03ff796f05925e62ae0f4fb320e42fa8b7c37 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 08:59:29,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 08:59:29,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 08:59:29,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 08:59:29,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 08:59:29,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 08:59:29,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 08:59:29,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 08:59:29,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 08:59:29,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 08:59:29,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 08:59:29,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 08:59:29,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 08:59:29,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 08:59:29,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 08:59:29,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 08:59:29,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 08:59:29,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 08:59:29,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 08:59:29,780 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 08:59:29,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 08:59:29,781 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 08:59:29,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 08:59:29,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 08:59:29,783 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 08:59:29,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 08:59:29,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 08:59:29,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 08:59:29,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 08:59:29,785 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 08:59:29,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 08:59:29,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 08:59:29,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 08:59:29,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 08:59:29,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 08:59:29,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 08:59:29,787 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-02 08:59:29,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 08:59:29,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 08:59:29,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 08:59:29,795 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 08:59:29,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 08:59:29,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 08:59:29,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 08:59:29,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 08:59:29,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 08:59:29,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 08:59:29,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 08:59:29,799 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_6b662cf2-8ece-4e92-b9d8-ad6131930891/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 -> f9c03ff796f05925e62ae0f4fb320e42fa8b7c37 [2018-12-02 08:59:29,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 08:59:29,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 08:59:29,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 08:59:29,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 08:59:29,826 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 08:59:29,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:59:29,860 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/data/485b2d1b0/8dfab1c472c24cc3996ff778ec5b0608/FLAGe340ebc14 [2018-12-02 08:59:30,335 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 08:59:30,335 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/sv-benchmarks/c/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:59:30,341 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/data/485b2d1b0/8dfab1c472c24cc3996ff778ec5b0608/FLAGe340ebc14 [2018-12-02 08:59:30,349 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/data/485b2d1b0/8dfab1c472c24cc3996ff778ec5b0608 [2018-12-02 08:59:30,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 08:59:30,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-02 08:59:30,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 08:59:30,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 08:59:30,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 08:59:30,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8167c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30, skipping insertion in model container [2018-12-02 08:59:30,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 08:59:30,378 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 08:59:30,520 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:59:30,526 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 08:59:30,582 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 08:59:30,601 INFO L195 MainTranslator]: Completed translation [2018-12-02 08:59:30,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30 WrapperNode [2018-12-02 08:59:30,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 08:59:30,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 08:59:30,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 08:59:30,602 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 08:59:30,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... [2018-12-02 08:59:30,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 08:59:30,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 08:59:30,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 08:59:30,631 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 08:59:30,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/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 [2018-12-02 08:59:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 08:59:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 08:59:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-02 08:59:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-02 08:59:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-02 08:59:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-02 08:59:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-02 08:59:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-02 08:59:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-02 08:59:30,667 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-02 08:59:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-02 08:59:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-02 08:59:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-02 08:59:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-02 08:59:30,672 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 08:59:30,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 08:59:30,866 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 08:59:30,866 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 08:59:30,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:59:30 BoogieIcfgContainer [2018-12-02 08:59:30,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 08:59:30,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 08:59:30,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 08:59:30,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 08:59:30,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:59:30" (1/3) ... [2018-12-02 08:59:30,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5dd484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:59:30, skipping insertion in model container [2018-12-02 08:59:30,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:59:30" (2/3) ... [2018-12-02 08:59:30,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5dd484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:59:30, skipping insertion in model container [2018-12-02 08:59:30,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:59:30" (3/3) ... [2018-12-02 08:59:30,870 INFO L112 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-12-02 08:59:30,876 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 08:59:30,880 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-02 08:59:30,889 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-02 08:59:30,903 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 08:59:30,903 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 08:59:30,903 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-02 08:59:30,903 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 08:59:30,903 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 08:59:30,903 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 08:59:30,903 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 08:59:30,903 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 08:59:30,904 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 08:59:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-02 08:59:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 08:59:30,917 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:30,917 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:30,918 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:30,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:30,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1113687630, now seen corresponding path program 1 times [2018-12-02 08:59:30,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:30,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:30,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:30,972 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:30,972 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:30,972 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:30,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:30,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:31,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 08:59:31,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:59:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:59:31,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:31,049 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2018-12-02 08:59:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:31,071 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-12-02 08:59:31,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:59:31,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-02 08:59:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:31,077 INFO L225 Difference]: With dead ends: 33 [2018-12-02 08:59:31,077 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 08:59:31,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 08:59:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-02 08:59:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 08:59:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-12-02 08:59:31,097 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2018-12-02 08:59:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:31,097 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-12-02 08:59:31,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:59:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-12-02 08:59:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:59:31,098 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:31,098 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:31,098 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:31,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:31,098 INFO L82 PathProgramCache]: Analyzing trace with hash 164578132, now seen corresponding path program 1 times [2018-12-02 08:59:31,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:31,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:31,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,103 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:31,103 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:31,104 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:31,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:31,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,142 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 08:59:31,145 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 27 [2018-12-02 08:59:31,148 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-12-02 08:59:31,149 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,155 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,161 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:31,162 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2018-12-02 08:59:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:31,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 08:59:31,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:59:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:59:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:31,192 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2018-12-02 08:59:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:31,207 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-02 08:59:31,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:59:31,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-12-02 08:59:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:31,208 INFO L225 Difference]: With dead ends: 28 [2018-12-02 08:59:31,208 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 08:59:31,208 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 08:59:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 08:59:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 08:59:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-12-02 08:59:31,210 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-12-02 08:59:31,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:31,211 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-12-02 08:59:31,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:59:31,211 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-12-02 08:59:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:59:31,211 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:31,211 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:31,211 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:31,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash 164578133, now seen corresponding path program 1 times [2018-12-02 08:59:31,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:31,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:31,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,216 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:31,216 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:31,216 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:31,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:31,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,243 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 [2018-12-02 08:59:31,243 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,249 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 11 treesize of output 14 [2018-12-02 08:59:31,252 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 14 treesize of output 17 [2018-12-02 08:59:31,253 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,256 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,261 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:31,262 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:23, output treesize:20 [2018-12-02 08:59:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:31,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:59:31,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:31,305 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-12-02 08:59:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:31,386 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2018-12-02 08:59:31,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:31,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 08:59:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:31,387 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:59:31,387 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:59:31,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:59:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:59:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-12-02 08:59:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 08:59:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 08:59:31,392 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 13 [2018-12-02 08:59:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:31,392 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 08:59:31,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 08:59:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 08:59:31,393 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:31,393 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:31,394 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:31,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1939585495, now seen corresponding path program 1 times [2018-12-02 08:59:31,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:31,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:31,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,400 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:31,400 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:31,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:31,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:31,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,444 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 [2018-12-02 08:59:31,445 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,452 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 15 treesize of output 18 [2018-12-02 08:59:31,455 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 18 treesize of output 21 [2018-12-02 08:59:31,456 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,461 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:31,470 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:30, output treesize:27 [2018-12-02 08:59:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:31,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:59:31,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:31,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:31,509 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2018-12-02 08:59:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:31,556 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-12-02 08:59:31,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:31,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-02 08:59:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:31,557 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:59:31,557 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:59:31,557 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:59:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:59:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2018-12-02 08:59:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 08:59:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-12-02 08:59:31,560 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2018-12-02 08:59:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:31,560 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-12-02 08:59:31,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-12-02 08:59:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 08:59:31,561 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:31,561 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:31,561 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:31,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1058496856, now seen corresponding path program 1 times [2018-12-02 08:59:31,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:31,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:31,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,566 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:31,566 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:31,566 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:31,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:31,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:31,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 08:59:31,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:31,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:31,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:31,612 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 5 states. [2018-12-02 08:59:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:31,640 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-12-02 08:59:31,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:31,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-02 08:59:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:31,641 INFO L225 Difference]: With dead ends: 50 [2018-12-02 08:59:31,641 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 08:59:31,642 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 08:59:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2018-12-02 08:59:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 08:59:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-02 08:59:31,645 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-12-02 08:59:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:31,645 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-02 08:59:31,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-02 08:59:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 08:59:31,646 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:31,646 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:31,647 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:31,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1759561434, now seen corresponding path program 1 times [2018-12-02 08:59:31,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:31,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:31,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:31,652 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:31,652 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:31,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:31,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:31,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:31,679 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 [2018-12-02 08:59:31,679 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,687 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 15 treesize of output 18 [2018-12-02 08:59:31,689 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 18 treesize of output 21 [2018-12-02 08:59:31,690 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,694 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:31,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:31,699 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:27, output treesize:24 [2018-12-02 08:59:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:31,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:59:31,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-12-02 08:59:31,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 08:59:31,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 08:59:31,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-02 08:59:31,762 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 6 states. [2018-12-02 08:59:33,804 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 27 [2018-12-02 08:59:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:33,843 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-02 08:59:33,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 08:59:33,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-02 08:59:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:33,844 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:59:33,844 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 08:59:33,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-02 08:59:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 08:59:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-02 08:59:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 08:59:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-02 08:59:33,848 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 17 [2018-12-02 08:59:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:33,848 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-02 08:59:33,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 08:59:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-02 08:59:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 08:59:33,848 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:33,849 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:33,849 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:33,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:33,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1278627866, now seen corresponding path program 1 times [2018-12-02 08:59:33,849 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:33,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:33,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:33,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:33,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:33,854 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:33,854 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:33,854 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:33,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:33,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 08:59:33,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-12-02 08:59:33,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-12-02 08:59:33,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 08:59:33,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 08:59:33,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:59:33,922 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 8 states. [2018-12-02 08:59:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:33,957 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2018-12-02 08:59:33,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 08:59:33,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-12-02 08:59:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:33,957 INFO L225 Difference]: With dead ends: 61 [2018-12-02 08:59:33,958 INFO L226 Difference]: Without dead ends: 61 [2018-12-02 08:59:33,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-12-02 08:59:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-02 08:59:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2018-12-02 08:59:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-02 08:59:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-12-02 08:59:33,960 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 19 [2018-12-02 08:59:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:33,960 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-12-02 08:59:33,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 08:59:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-12-02 08:59:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:59:33,961 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:33,961 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:33,961 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:33,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 28359059, now seen corresponding path program 1 times [2018-12-02 08:59:33,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:33,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:33,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:33,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:33,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:33,967 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:33,967 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:33,967 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:33,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:33,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:33,984 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 [2018-12-02 08:59:33,986 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 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-02 08:59:33,987 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:33,989 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:34,001 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:34,002 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2018-12-02 08:59:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:59:34,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:34,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 08:59:34,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 08:59:34,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 08:59:34,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:34,025 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2018-12-02 08:59:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:34,037 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-02 08:59:34,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 08:59:34,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-12-02 08:59:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:34,038 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:59:34,038 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 08:59:34,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 08:59:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 08:59:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-12-02 08:59:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 08:59:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-12-02 08:59:34,040 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 20 [2018-12-02 08:59:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:34,041 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-12-02 08:59:34,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 08:59:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-12-02 08:59:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:59:34,041 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:34,041 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:34,042 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:34,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:34,042 INFO L82 PathProgramCache]: Analyzing trace with hash 28359060, now seen corresponding path program 1 times [2018-12-02 08:59:34,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:34,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:34,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,046 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:34,046 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:34,046 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:34,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:34,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:34,066 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 15 treesize of output 18 [2018-12-02 08:59:34,079 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 18 treesize of output 21 [2018-12-02 08:59:34,079 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-02 08:59:34,090 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 08:59:34,100 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-12-02 08:59:34,100 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:34 [2018-12-02 08:59:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:59:34,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:34,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:59:34,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:34,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:34,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:34,151 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2018-12-02 08:59:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:34,192 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-12-02 08:59:34,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:34,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:59:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:34,193 INFO L225 Difference]: With dead ends: 45 [2018-12-02 08:59:34,193 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 08:59:34,193 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-02 08:59:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 08:59:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-02 08:59:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 08:59:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-12-02 08:59:34,195 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2018-12-02 08:59:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:34,195 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-12-02 08:59:34,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-12-02 08:59:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:59:34,196 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:34,196 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:34,196 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:34,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash 28357519, now seen corresponding path program 1 times [2018-12-02 08:59:34,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:34,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:34,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,200 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:34,200 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:34,200 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:34,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:34,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:59:34,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:34,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 08:59:34,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:34,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:34,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:34,244 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2018-12-02 08:59:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:34,280 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-12-02 08:59:34,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:34,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:59:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:34,281 INFO L225 Difference]: With dead ends: 59 [2018-12-02 08:59:34,281 INFO L226 Difference]: Without dead ends: 59 [2018-12-02 08:59:34,281 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-02 08:59:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2018-12-02 08:59:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-02 08:59:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-12-02 08:59:34,283 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 20 [2018-12-02 08:59:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:34,283 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-12-02 08:59:34,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-12-02 08:59:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 08:59:34,283 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:34,283 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:34,284 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:34,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash -982759731, now seen corresponding path program 1 times [2018-12-02 08:59:34,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:34,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:34,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:34,289 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:34,289 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:34,289 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:34,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 08:59:34,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 08:59:34,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:34,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:59:34,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:34,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:34,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2018-12-02 08:59:34,814 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 5 states. [2018-12-02 08:59:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:43,535 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-12-02 08:59:43,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:43,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-02 08:59:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:43,536 INFO L225 Difference]: With dead ends: 46 [2018-12-02 08:59:43,536 INFO L226 Difference]: Without dead ends: 27 [2018-12-02 08:59:43,536 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2018-12-02 08:59:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-02 08:59:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-02 08:59:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-02 08:59:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-02 08:59:43,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2018-12-02 08:59:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:43,537 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-02 08:59:43,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-02 08:59:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 08:59:43,538 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 08:59:43,538 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 08:59:43,538 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-12-02 08:59:43,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 08:59:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash 822324905, now seen corresponding path program 2 times [2018-12-02 08:59:43,538 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 08:59:43,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 08:59:43,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:43,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 08:59:43,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 08:59:43,542 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-02 08:59:43,542 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-02 08:59:43,542 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-02 08:59:43,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 08:59:43,561 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 08:59:43,561 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 08:59:43,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 08:59:43,573 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 15 treesize of output 18 [2018-12-02 08:59:43,575 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 18 treesize of output 21 [2018-12-02 08:59:43,575 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:43,579 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 08:59:43,586 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 [2018-12-02 08:59:43,587 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 08:59:43,601 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-02 08:59:43,602 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:30, output treesize:27 [2018-12-02 08:59:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 08:59:43,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 08:59:43,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 08:59:43,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 08:59:43,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 08:59:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:43,661 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-12-02 08:59:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 08:59:43,682 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-12-02 08:59:43,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 08:59:43,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-02 08:59:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 08:59:43,682 INFO L225 Difference]: With dead ends: 26 [2018-12-02 08:59:43,682 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 08:59:43,682 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-02 08:59:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 08:59:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 08:59:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 08:59:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 08:59:43,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-12-02 08:59:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 08:59:43,683 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 08:59:43,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 08:59:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 08:59:43,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 08:59:43,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:59:43 BoogieIcfgContainer [2018-12-02 08:59:43,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 08:59:43,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 08:59:43,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 08:59:43,686 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 08:59:43,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:59:30" (3/4) ... [2018-12-02 08:59:43,690 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 08:59:43,695 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 08:59:43,695 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-12-02 08:59:43,696 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-12-02 08:59:43,696 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 08:59:43,699 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-02 08:59:43,699 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 08:59:43,699 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 08:59:43,699 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 08:59:43,728 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6b662cf2-8ece-4e92-b9d8-ad6131930891/bin-2019/uautomizer/witness.graphml [2018-12-02 08:59:43,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 08:59:43,729 INFO L168 Benchmark]: Toolchain (without parser) took 13377.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2018-12-02 08:59:43,729 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 08:59:43,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-02 08:59:43,730 INFO L168 Benchmark]: Boogie Preprocessor took 28.23 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. [2018-12-02 08:59:43,730 INFO L168 Benchmark]: RCFGBuilder took 235.77 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2018-12-02 08:59:43,730 INFO L168 Benchmark]: TraceAbstraction took 12819.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-12-02 08:59:43,731 INFO L168 Benchmark]: Witness Printer took 41.84 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: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-12-02 08:59:43,732 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.23 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 235.77 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12819.32 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -63.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.84 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: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 550]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 7 error locations. SAFE Result, 12.7s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 11.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 249 SDtfs, 345 SDslu, 266 SDs, 0 SdLazy, 340 SolverSat, 23 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, 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, 12 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 207 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 195 ConstructedInterpolants, 32 QuantifiedInterpolants, 29792 SizeOfPredicates, 41 NumberOfNonLiveVariables, 909 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 13/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...