./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/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 86b203c3a804c103d90401bd32cfcff28939b920 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:00:49,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:00:49,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:00:49,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:00:49,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:00:49,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:00:49,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:00:49,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:00:49,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:00:49,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:00:49,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:00:49,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:00:49,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:00:49,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:00:49,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:00:49,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:00:49,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:00:49,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:00:49,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:00:49,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:00:49,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:00:49,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:00:49,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:00:49,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:00:49,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:00:49,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:00:49,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:00:49,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:00:49,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:00:49,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:00:49,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:00:49,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:00:49,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:00:49,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:00:49,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:00:49,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:00:49,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:00:49,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:00:49,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:00:49,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:00:49,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:00:49,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 23:00:49,853 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:00:49,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:00:49,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:00:49,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:00:49,863 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:00:49,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:00:49,863 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:00:49,863 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 23:00:49,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 23:00:49,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:00:49,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:00:49,865 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:00:49,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:00:49,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:00:49,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:00:49,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:00:49,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:00:49,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:00:49,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:00:49,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:00:49,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:00:49,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e898b7b7-6c17-4178-a854-8e3a03ca35bf/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 -> 86b203c3a804c103d90401bd32cfcff28939b920 [2019-11-15 23:00:49,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:00:49,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:00:49,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:00:49,906 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:00:49,906 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:00:49,907 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2019-11-15 23:00:49,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/data/eb390b9fe/4242e18f5777400c8be09d00aa8ef356/FLAGa204c5fe8 [2019-11-15 23:00:50,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:00:50,399 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2019-11-15 23:00:50,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/data/eb390b9fe/4242e18f5777400c8be09d00aa8ef356/FLAGa204c5fe8 [2019-11-15 23:00:50,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/data/eb390b9fe/4242e18f5777400c8be09d00aa8ef356 [2019-11-15 23:00:50,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:00:50,424 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 23:00:50,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:00:50,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:00:50,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:00:50,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bbe6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50, skipping insertion in model container [2019-11-15 23:00:50,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,436 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:00:50,474 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:00:50,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:00:50,823 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:00:50,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:00:50,908 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:00:50,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50 WrapperNode [2019-11-15 23:00:50,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:00:50,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:00:50,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:00:50,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:00:50,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... [2019-11-15 23:00:50,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:00:50,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:00:50,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:00:50,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:00:50,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/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 [2019-11-15 23:00:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 23:00:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:00:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 23:00:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 23:00:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-15 23:00:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-11-15 23:00:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 23:00:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 23:00:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 23:00:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 23:00:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 23:00:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 23:00:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 23:00:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 23:00:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 23:00:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 23:00:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 23:00:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 23:00:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 23:00:51,043 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 23:00:51,043 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 23:00:51,043 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 23:00:51,043 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 23:00:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 23:00:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 23:00:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 23:00:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 23:00:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 23:00:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 23:00:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 23:00:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 23:00:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 23:00:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 23:00:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 23:00:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 23:00:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 23:00:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 23:00:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 23:00:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 23:00:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 23:00:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 23:00:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 23:00:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 23:00:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-15 23:00:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-11-15 23:00:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 23:00:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 23:00:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-15 23:00:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-15 23:00:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:00:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 23:00:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:00:51,499 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-15 23:00:51,659 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:00:51,660 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-15 23:00:51,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:00:51 BoogieIcfgContainer [2019-11-15 23:00:51,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:00:51,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:00:51,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:00:51,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:00:51,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:00:50" (1/3) ... [2019-11-15 23:00:51,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666cef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:00:51, skipping insertion in model container [2019-11-15 23:00:51,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:00:50" (2/3) ... [2019-11-15 23:00:51,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666cef15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:00:51, skipping insertion in model container [2019-11-15 23:00:51,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:00:51" (3/3) ... [2019-11-15 23:00:51,675 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2019-11-15 23:00:51,684 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:00:51,691 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2019-11-15 23:00:51,701 INFO L249 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2019-11-15 23:00:51,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:00:51,727 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 23:00:51,727 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:00:51,727 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:00:51,727 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:00:51,727 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:00:51,728 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:00:51,728 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:00:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-15 23:00:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:00:51,766 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:51,767 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:51,769 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:51,775 INFO L82 PathProgramCache]: Analyzing trace with hash 975324898, now seen corresponding path program 1 times [2019-11-15 23:00:51,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:51,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837154288] [2019-11-15 23:00:51,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:51,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:51,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:52,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837154288] [2019-11-15 23:00:52,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304434655] [2019-11-15 23:00:52,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/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 [2019-11-15 23:00:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:52,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 23:00:52,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:00:52,473 INFO L375 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 [2019-11-15 23:00:52,477 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:52,483 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:52,483 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:52,483 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-15 23:00:52,562 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:52,562 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-15 23:00:52,564 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:52,588 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-15 23:00:52,591 INFO L496 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. [2019-11-15 23:00:52,591 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2019-11-15 23:00:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:00:52,615 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:00:52,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2019-11-15 23:00:52,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551684358] [2019-11-15 23:00:52,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:00:52,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:52,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:00:52,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:00:52,636 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 12 states. [2019-11-15 23:00:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:53,046 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2019-11-15 23:00:53,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:00:53,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-15 23:00:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:53,059 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:00:53,060 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 23:00:53,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:00:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 23:00:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-15 23:00:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 23:00:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-15 23:00:53,105 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 19 [2019-11-15 23:00:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:53,111 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-15 23:00:53,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:00:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-15 23:00:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:00:53,127 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:53,127 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:53,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:00:53,331 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:53,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:53,331 INFO L82 PathProgramCache]: Analyzing trace with hash 975324899, now seen corresponding path program 1 times [2019-11-15 23:00:53,331 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:53,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253886388] [2019-11-15 23:00:53,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:53,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:53,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:53,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253886388] [2019-11-15 23:00:53,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163726628] [2019-11-15 23:00:53,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/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 [2019-11-15 23:00:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:53,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-15 23:00:53,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:00:53,712 INFO L375 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 [2019-11-15 23:00:53,712 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:53,719 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:53,723 INFO L375 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 [2019-11-15 23:00:53,723 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:53,729 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:53,729 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:53,730 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-15 23:00:53,783 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:53,784 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-15 23:00:53,785 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:53,794 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:53,798 INFO L375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2019-11-15 23:00:53,798 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:53,807 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:53,808 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:00:53,808 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2019-11-15 23:00:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:00:53,841 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:00:53,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2019-11-15 23:00:53,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761753627] [2019-11-15 23:00:53,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:00:53,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:53,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:00:53,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:00:53,843 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2019-11-15 23:00:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:54,176 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-15 23:00:54,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:00:54,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-15 23:00:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:54,178 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:00:54,178 INFO L226 Difference]: Without dead ends: 32 [2019-11-15 23:00:54,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-11-15 23:00:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-15 23:00:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-15 23:00:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 23:00:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-15 23:00:54,184 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2019-11-15 23:00:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:54,184 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-15 23:00:54,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:00:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-15 23:00:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 23:00:54,185 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:54,186 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:54,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:00:54,389 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1236254071, now seen corresponding path program 1 times [2019-11-15 23:00:54,389 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:54,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625175787] [2019-11-15 23:00:54,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:54,390 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:54,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:54,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625175787] [2019-11-15 23:00:54,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41396993] [2019-11-15 23:00:54,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/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 [2019-11-15 23:00:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:54,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:00:54,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:00:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:54,699 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:00:54,699 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-11-15 23:00:54,699 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602093315] [2019-11-15 23:00:54,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:00:54,700 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:54,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:00:54,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:00:54,700 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-15 23:00:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:54,823 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-11-15 23:00:54,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:00:54,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-15 23:00:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:54,825 INFO L225 Difference]: With dead ends: 31 [2019-11-15 23:00:54,825 INFO L226 Difference]: Without dead ends: 31 [2019-11-15 23:00:54,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:00:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-15 23:00:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-15 23:00:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:00:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2019-11-15 23:00:54,829 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2019-11-15 23:00:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:54,830 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2019-11-15 23:00:54,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:00:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2019-11-15 23:00:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 23:00:54,830 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:54,830 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:55,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:00:55,031 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1665781067, now seen corresponding path program 1 times [2019-11-15 23:00:55,032 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:55,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194401627] [2019-11-15 23:00:55,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:55,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194401627] [2019-11-15 23:00:55,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:00:55,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-15 23:00:55,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403194061] [2019-11-15 23:00:55,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 23:00:55,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:55,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 23:00:55,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:00:55,142 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2019-11-15 23:00:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:55,308 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-15 23:00:55,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:00:55,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-11-15 23:00:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:55,311 INFO L225 Difference]: With dead ends: 30 [2019-11-15 23:00:55,311 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 23:00:55,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:00:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 23:00:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 23:00:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:00:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-15 23:00:55,315 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2019-11-15 23:00:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:55,316 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-15 23:00:55,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 23:00:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-15 23:00:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 23:00:55,317 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:55,317 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:55,317 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 99605601, now seen corresponding path program 1 times [2019-11-15 23:00:55,318 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:55,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208656596] [2019-11-15 23:00:55,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:55,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208656596] [2019-11-15 23:00:55,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:00:55,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-15 23:00:55,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167052874] [2019-11-15 23:00:55,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 23:00:55,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:55,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 23:00:55,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:00:55,461 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2019-11-15 23:00:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:55,664 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-15 23:00:55,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:00:55,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2019-11-15 23:00:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:55,665 INFO L225 Difference]: With dead ends: 29 [2019-11-15 23:00:55,665 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:00:55,665 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:00:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:00:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 23:00:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 23:00:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-15 23:00:55,668 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 30 [2019-11-15 23:00:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:55,669 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-15 23:00:55,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 23:00:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-15 23:00:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 23:00:55,670 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:55,670 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:55,670 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1207193587, now seen corresponding path program 1 times [2019-11-15 23:00:55,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:55,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987320866] [2019-11-15 23:00:55,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:55,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:55,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987320866] [2019-11-15 23:00:55,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:00:55,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-15 23:00:55,886 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152714009] [2019-11-15 23:00:55,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:00:55,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:55,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:00:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:00:55,887 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 16 states. [2019-11-15 23:00:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:56,210 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-11-15 23:00:56,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 23:00:56,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2019-11-15 23:00:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:56,211 INFO L225 Difference]: With dead ends: 28 [2019-11-15 23:00:56,211 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:00:56,212 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-11-15 23:00:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:00:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 23:00:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:00:56,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-11-15 23:00:56,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 31 [2019-11-15 23:00:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:56,215 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-11-15 23:00:56,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:00:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-11-15 23:00:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 23:00:56,216 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:00:56,217 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:00:56,217 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 23:00:56,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:00:56,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1231704548, now seen corresponding path program 1 times [2019-11-15 23:00:56,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:00:56,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434433152] [2019-11-15 23:00:56,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:56,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:00:56,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:00:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:56,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434433152] [2019-11-15 23:00:56,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255282399] [2019-11-15 23:00:56,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/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 [2019-11-15 23:00:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:00:56,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-15 23:00:56,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:00:56,895 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:56,896 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 63 [2019-11-15 23:00:56,897 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:56,927 INFO L567 ElimStorePlain]: treesize reduction 28, result has 50.9 percent of original size [2019-11-15 23:00:56,928 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:56,928 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:29 [2019-11-15 23:00:56,978 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 23:00:56,978 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:56,990 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:56,991 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:56,991 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:45 [2019-11-15 23:00:57,077 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2019-11-15 23:00:57,078 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,099 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:57,099 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,099 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:45 [2019-11-15 23:00:57,106 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2019-11-15 23:00:57,107 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,118 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:57,118 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,118 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:29 [2019-11-15 23:00:57,194 INFO L375 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2019-11-15 23:00:57,195 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,211 INFO L567 ElimStorePlain]: treesize reduction 4, result has 86.2 percent of original size [2019-11-15 23:00:57,212 INFO L496 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. [2019-11-15 23:00:57,212 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:25 [2019-11-15 23:00:57,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:00:57,300 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:00:57,301 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-15 23:00:57,301 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:00:57,323 INFO L567 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2019-11-15 23:00:57,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:00:57,324 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:29 [2019-11-15 23:00:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:00:57,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:00:57,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2019-11-15 23:00:57,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461724461] [2019-11-15 23:00:57,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:00:57,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:00:57,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:00:57,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2019-11-15 23:00:57,370 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 16 states. [2019-11-15 23:00:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:00:57,748 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-15 23:00:57,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 23:00:57,748 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2019-11-15 23:00:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:00:57,749 INFO L225 Difference]: With dead ends: 27 [2019-11-15 23:00:57,749 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:00:57,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2019-11-15 23:00:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:00:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:00:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:00:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:00:57,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-11-15 23:00:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:00:57,750 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:00:57,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:00:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:00:57,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:00:57,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:00:57,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:00:57 BoogieIcfgContainer [2019-11-15 23:00:57,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:00:57,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:00:57,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:00:57,956 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:00:57,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:00:51" (3/4) ... [2019-11-15 23:00:57,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:00:57,967 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 23:00:57,967 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2019-11-15 23:00:57,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-11-15 23:00:57,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-11-15 23:00:57,978 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 23:00:57,979 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_node [2019-11-15 23:00:57,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 23:00:57,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:00:57,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 23:00:58,050 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e898b7b7-6c17-4178-a854-8e3a03ca35bf/bin/uautomizer/witness.graphml [2019-11-15 23:00:58,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:00:58,052 INFO L168 Benchmark]: Toolchain (without parser) took 7627.89 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 305.1 MB). Free memory was 940.7 MB in the beginning and 1.3 GB in the end (delta: -353.2 MB). Peak memory consumption was 373.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:00:58,052 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:00:58,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:00:58,053 INFO L168 Benchmark]: Boogie Preprocessor took 48.22 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:00:58,053 INFO L168 Benchmark]: RCFGBuilder took 703.24 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:00:58,054 INFO L168 Benchmark]: TraceAbstraction took 6293.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 776.0 MB in the end (delta: 277.5 MB). Peak memory consumption was 358.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:00:58,054 INFO L168 Benchmark]: Witness Printer took 94.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 95.9 MB). Free memory was 776.0 MB in the beginning and 1.3 GB in the end (delta: -517.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:00:58,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 484.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.22 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 703.24 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6293.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 776.0 MB in the end (delta: 277.5 MB). Peak memory consumption was 358.2 MB. Max. memory is 11.5 GB. * Witness Printer took 94.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 95.9 MB). Free memory was 776.0 MB in the beginning and 1.3 GB in the end (delta: -517.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 15 error locations. Result: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 130 SDslu, 564 SDs, 0 SdLazy, 1261 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 273 ConstructedInterpolants, 14 QuantifiedInterpolants, 60220 SizeOfPredicates, 20 NumberOfNonLiveVariables, 434 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 27/55 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 proved your program to be correct! Received shutdown request...