./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/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 afc88cbf4886a453fed887733400308a528b9724 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 01:01:52,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:01:52,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:01:52,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:01:52,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:01:52,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:01:52,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:01:52,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:01:52,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:01:52,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:01:52,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:01:52,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:01:52,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:01:52,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:01:52,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:01:52,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:01:52,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:01:52,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:01:52,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:01:52,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:01:52,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:01:52,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:01:52,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:01:52,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:01:52,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:01:52,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:01:52,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:01:52,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:01:52,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:01:52,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:01:52,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:01:52,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:01:52,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:01:52,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:01:52,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:01:52,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:01:52,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:01:52,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:01:52,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:01:52,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:01:52,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:01:52,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 01:01:52,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:01:52,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:01:52,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:01:52,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:01:52,830 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:01:52,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:01:52,831 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:01:52,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:01:52,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:01:52,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:01:52,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 01:01:52,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 01:01:52,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:01:52,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:01:52,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:01:52,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:01:52,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:01:52,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:01:52,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:01:52,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:01:52,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:01:52,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 01:01:52,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 01:01:52,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 01:01:52,836 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/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 -> afc88cbf4886a453fed887733400308a528b9724 [2019-11-20 01:01:52,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:01:52,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:01:52,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:01:52,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:01:52,982 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:01:52,983 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/../../sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-20 01:01:53,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/data/3e66f8a6b/e692cfc6708448efb1ed618d4b2aa6b8/FLAG0d4c372a6 [2019-11-20 01:01:53,531 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:01:53,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-20 01:01:53,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/data/3e66f8a6b/e692cfc6708448efb1ed618d4b2aa6b8/FLAG0d4c372a6 [2019-11-20 01:01:53,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/data/3e66f8a6b/e692cfc6708448efb1ed618d4b2aa6b8 [2019-11-20 01:01:53,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:01:53,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 01:01:53,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:01:53,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:01:53,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:01:53,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:53" (1/1) ... [2019-11-20 01:01:53,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8a6ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:53, skipping insertion in model container [2019-11-20 01:01:53,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:53" (1/1) ... [2019-11-20 01:01:53,844 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:01:53,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:01:54,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:01:54,252 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:01:54,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:01:54,359 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:01:54,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54 WrapperNode [2019-11-20 01:01:54,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:01:54,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:01:54,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:01:54,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:01:54,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... [2019-11-20 01:01:54,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:01:54,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:01:54,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:01:54,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:01:54,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/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 [2019-11-20 01:01:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 01:01:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:01:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 01:01:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 01:01:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 01:01:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 01:01:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 01:01:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 01:01:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 01:01:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 01:01:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 01:01:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 01:01:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 01:01:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 01:01:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 01:01:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 01:01:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 01:01:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 01:01:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 01:01:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 01:01:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 01:01:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 01:01:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 01:01:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 01:01:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 01:01:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 01:01:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 01:01:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 01:01:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 01:01:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 01:01:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 01:01:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 01:01:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 01:01:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 01:01:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 01:01:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 01:01:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 01:01:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 01:01:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 01:01:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 01:01:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 01:01:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 01:01:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 01:01:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 01:01:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 01:01:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 01:01:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 01:01:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 01:01:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 01:01:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 01:01:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 01:01:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 01:01:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:01:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:01:54,882 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 01:01:55,160 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:01:55,160 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-20 01:01:55,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:55 BoogieIcfgContainer [2019-11-20 01:01:55,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:01:55,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:01:55,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:01:55,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:01:55,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:01:53" (1/3) ... [2019-11-20 01:01:55,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c11f1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:55, skipping insertion in model container [2019-11-20 01:01:55,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:54" (2/3) ... [2019-11-20 01:01:55,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c11f1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:55, skipping insertion in model container [2019-11-20 01:01:55,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:55" (3/3) ... [2019-11-20 01:01:55,168 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-11-20 01:01:55,176 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:01:55,181 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2019-11-20 01:01:55,190 INFO L249 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2019-11-20 01:01:55,206 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:01:55,206 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 01:01:55,206 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:01:55,206 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:01:55,206 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:01:55,207 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:01:55,207 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:01:55,207 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:01:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-11-20 01:01:55,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:01:55,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:01:55,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:01:55,230 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:01:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:01:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 692600077, now seen corresponding path program 1 times [2019-11-20 01:01:55,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:01:55,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [819299840] [2019-11-20 01:01:55,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:01:55,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 01:01:55,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:01:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:55,480 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:01:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:55,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [819299840] [2019-11-20 01:01:55,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:01:55,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 01:01:55,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152014696] [2019-11-20 01:01:55,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 01:01:55,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:01:55,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 01:01:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 01:01:55,518 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-11-20 01:01:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:01:55,534 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2019-11-20 01:01:55,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 01:01:55,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 01:01:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:01:55,541 INFO L225 Difference]: With dead ends: 60 [2019-11-20 01:01:55,542 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 01:01:55,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 01:01:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 01:01:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-11-20 01:01:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-20 01:01:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-11-20 01:01:55,576 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2019-11-20 01:01:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:01:55,577 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2019-11-20 01:01:55,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 01:01:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2019-11-20 01:01:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:01:55,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:01:55,578 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:01:55,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:55,788 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:01:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:01:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash 692599116, now seen corresponding path program 1 times [2019-11-20 01:01:55,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:01:55,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1713947357] [2019-11-20 01:01:55,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:01:55,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:01:55,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:01:56,009 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 01:01:56,009 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:01:56,014 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:01:56,014 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:01:56,015 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 01:01:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:56,036 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:01:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:56,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1713947357] [2019-11-20 01:01:56,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:01:56,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 01:01:56,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986084475] [2019-11-20 01:01:56,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:01:56,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:01:56,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:01:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:01:56,050 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2019-11-20 01:01:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:01:56,293 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2019-11-20 01:01:56,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:01:56,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-20 01:01:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:01:56,297 INFO L225 Difference]: With dead ends: 59 [2019-11-20 01:01:56,297 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 01:01:56,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:01:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 01:01:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2019-11-20 01:01:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 01:01:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2019-11-20 01:01:56,314 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 10 [2019-11-20 01:01:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:01:56,314 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2019-11-20 01:01:56,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:01:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2019-11-20 01:01:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:01:56,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:01:56,316 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:01:56,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:56,518 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:01:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:01:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash 692599117, now seen corresponding path program 1 times [2019-11-20 01:01:56,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:01:56,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1820461943] [2019-11-20 01:01:56,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:01:56,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:01:56,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:01:56,718 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 01:01:56,719 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 01:01:56,724 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 01:01:56,725 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 01:01:56,725 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 01:01:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:56,748 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 01:01:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:01:56,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1820461943] [2019-11-20 01:01:56,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:01:56,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-20 01:01:56,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415398086] [2019-11-20 01:01:56,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:01:56,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 01:01:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:01:56,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:01:56,850 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 6 states. [2019-11-20 01:01:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:01:57,333 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2019-11-20 01:01:57,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:01:57,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-20 01:01:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:01:57,336 INFO L225 Difference]: With dead ends: 69 [2019-11-20 01:01:57,337 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 01:01:57,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 01:01:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 01:01:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2019-11-20 01:01:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-20 01:01:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2019-11-20 01:01:57,348 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 10 [2019-11-20 01:01:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:01:57,349 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2019-11-20 01:01:57,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:01:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2019-11-20 01:01:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 01:01:57,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:01:57,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:01:57,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:57,557 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-20 01:01:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:01:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1750298852, now seen corresponding path program 1 times [2019-11-20 01:01:57,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 01:01:57,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1552793981] [2019-11-20 01:01:57,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2067ae9b-0ffc-4163-9f41-7d7c92356092/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:01:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:01:57,830 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 01:01:57,830 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 01:01:58,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 01:01:58,039 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-20 01:01:58,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:01:58 BoogieIcfgContainer [2019-11-20 01:01:58,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:01:58,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:01:58,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:01:58,053 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:01:58,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:55" (3/4) ... [2019-11-20 01:01:58,056 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:01:58,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:01:58,058 INFO L168 Benchmark]: Toolchain (without parser) took 4227.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 939.4 MB in the beginning and 847.5 MB in the end (delta: 91.9 MB). Peak memory consumption was 213.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:01:58,058 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:01:58,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:01:58,059 INFO L168 Benchmark]: Boogie Preprocessor took 77.87 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:01:58,060 INFO L168 Benchmark]: RCFGBuilder took 722.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 11.5 GB. [2019-11-20 01:01:58,060 INFO L168 Benchmark]: TraceAbstraction took 2889.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 847.5 MB in the end (delta: 184.7 MB). Peak memory consumption was 184.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:01:58,061 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 1.2 GB. Free memory is still 847.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:01:58,063 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 529.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.87 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 722.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2889.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 847.5 MB in the end (delta: 184.7 MB). Peak memory consumption was 184.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.04 ms. Allocated memory is still 1.2 GB. Free memory is still 847.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}] [L524] COND FALSE !(a == 0) VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}] [L525] p = a VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L538] p = a VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L539] COND TRUE \read(flag) VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L540] EXPR p->h VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L540] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={-2147483648:0}, flag=1, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=3] [L545] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 76 locations, 21 error locations. Result: UNSAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 251 SDslu, 43 SDs, 0 SdLazy, 120 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1638 SizeOfPredicates, 8 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...