./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD --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 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD --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 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:21:02,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:21:02,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:21:02,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:21:02,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:21:02,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:21:02,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:21:02,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:21:02,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:21:02,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:21:02,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:21:02,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:21:02,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:21:02,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:21:02,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:21:02,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:21:02,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:21:02,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:21:02,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:21:02,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:21:02,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:21:02,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:21:02,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:21:02,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:21:02,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:21:02,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:21:02,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:21:02,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:21:02,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:21:02,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:21:02,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:21:02,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:21:02,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:21:02,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:21:02,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:21:02,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:21:02,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:21:02,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:21:02,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:21:02,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:21:02,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:21:02,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:21:03,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:21:03,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:21:03,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:21:03,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:21:03,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:21:03,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:21:03,058 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:21:03,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:21:03,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:21:03,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:21:03,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:21:03,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:21:03,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:21:03,061 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:21:03,061 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:21:03,061 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:21:03,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:21:03,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:21:03,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:21:03,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:21:03,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:21:03,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:21:03,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:21:03,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:21:03,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:21:03,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:21:03,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:21:03,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:21:03,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:21:03,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-10-28 23:21:03,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:21:03,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:21:03,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:21:03,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:21:03,352 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:21:03,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 23:21:03,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/842f0a0ff/4fcfd947b29849ae860fd44d8742c5c7/FLAGe91b40874 [2021-10-28 23:21:04,016 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:21:04,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 23:21:04,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/842f0a0ff/4fcfd947b29849ae860fd44d8742c5c7/FLAGe91b40874 [2021-10-28 23:21:04,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/842f0a0ff/4fcfd947b29849ae860fd44d8742c5c7 [2021-10-28 23:21:04,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:21:04,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:21:04,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:04,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:21:04,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:21:04,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d13598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04, skipping insertion in model container [2021-10-28 23:21:04,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:21:04,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:21:04,763 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 23:21:04,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:04,794 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:21:04,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 23:21:04,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:04,906 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:21:04,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04 WrapperNode [2021-10-28 23:21:04,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:04,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:21:04,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:21:04,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:21:04,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:04,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:21:04,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:21:04,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:21:04,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:21:05,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (1/1) ... [2021-10-28 23:21:05,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:21:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:21:05,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:21:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:21:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:21:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:21:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:21:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:21:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:21:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:21:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:21:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:21:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:21:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:21:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:21:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:21:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:21:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:21:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:21:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:21:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:21:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 23:21:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:21:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:21:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:21:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:21:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:21:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:21:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:21:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:21:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:21:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:21:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:21:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:21:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:21:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:21:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:21:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:21:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:21:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:21:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:21:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:21:05,098 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:21:05,099 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:21:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:21:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:21:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:21:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:21:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:21:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:21:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:21:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:21:05,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:21:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:21:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:21:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:21:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:21:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:21:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:21:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:21:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:21:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:21:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:21:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:21:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:21:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:21:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:21:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:21:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:21:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:21:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:21:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:21:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:21:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:21:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:21:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:21:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:21:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:21:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:21:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:21:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:21:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:21:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:21:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:21:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:21:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:21:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:21:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:21:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:21:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:21:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:21:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:21:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:21:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:21:05,111 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:21:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:21:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:21:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:21:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:21:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:21:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:21:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:21:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:21:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:21:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:21:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:21:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:21:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:21:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:21:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:21:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:21:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:21:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:21:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:21:05,395 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:21:05,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:21:05,825 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:21:05,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:05 BoogieIcfgContainer [2021-10-28 23:21:05,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:21:05,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:21:05,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:21:05,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:21:05,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:21:04" (1/3) ... [2021-10-28 23:21:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f6a60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:05, skipping insertion in model container [2021-10-28 23:21:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:04" (2/3) ... [2021-10-28 23:21:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f6a60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:05, skipping insertion in model container [2021-10-28 23:21:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:05" (3/3) ... [2021-10-28 23:21:05,841 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-10-28 23:21:05,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:21:05,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 23:21:05,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:21:05,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:21:05,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 23:21:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:21:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:21:05,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:05,937 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:05,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -234092837, now seen corresponding path program 1 times [2021-10-28 23:21:05,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:05,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808843207] [2021-10-28 23:21:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:05,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:06,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:06,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808843207] [2021-10-28 23:21:06,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808843207] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:06,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:06,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:21:06,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385067647] [2021-10-28 23:21:06,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:21:06,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:21:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:21:06,262 INFO L87 Difference]: Start difference. First operand has 98 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 92 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:06,597 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-10-28 23:21:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:21:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:21:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:06,606 INFO L225 Difference]: With dead ends: 98 [2021-10-28 23:21:06,622 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 23:21:06,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:21:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 23:21:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-10-28 23:21:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-10-28 23:21:06,683 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 11 [2021-10-28 23:21:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:06,684 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-10-28 23:21:06,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-10-28 23:21:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:21:06,685 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:06,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:06,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:21:06,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069837, now seen corresponding path program 1 times [2021-10-28 23:21:06,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:06,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117918408] [2021-10-28 23:21:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:06,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:06,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:06,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117918408] [2021-10-28 23:21:06,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117918408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:06,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:06,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:21:06,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823751637] [2021-10-28 23:21:06,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:21:06,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:06,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:21:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:21:06,791 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:07,002 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-10-28 23:21:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:21:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 23:21:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:07,004 INFO L225 Difference]: With dead ends: 111 [2021-10-28 23:21:07,004 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 23:21:07,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:21:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 23:21:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2021-10-28 23:21:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.7049180327868851) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2021-10-28 23:21:07,021 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 12 [2021-10-28 23:21:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:07,021 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2021-10-28 23:21:07,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2021-10-28 23:21:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:21:07,022 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:07,022 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:21:07,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1332069838, now seen corresponding path program 1 times [2021-10-28 23:21:07,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:07,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845016562] [2021-10-28 23:21:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:07,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:07,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:07,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845016562] [2021-10-28 23:21:07,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845016562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:07,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:07,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:21:07,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653879413] [2021-10-28 23:21:07,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:21:07,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:21:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:21:07,158 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:07,442 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-10-28 23:21:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:21:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 23:21:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:07,447 INFO L225 Difference]: With dead ends: 128 [2021-10-28 23:21:07,448 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 23:21:07,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:21:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 23:21:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-10-28 23:21:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 107 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2021-10-28 23:21:07,467 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 12 [2021-10-28 23:21:07,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:07,468 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2021-10-28 23:21:07,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2021-10-28 23:21:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:21:07,469 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:07,469 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:07,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:21:07,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:07,471 INFO L85 PathProgramCache]: Analyzing trace with hash 296118254, now seen corresponding path program 1 times [2021-10-28 23:21:07,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:07,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391679144] [2021-10-28 23:21:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:07,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:07,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:07,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391679144] [2021-10-28 23:21:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391679144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:07,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:07,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:21:07,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092108245] [2021-10-28 23:21:07,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:07,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:07,618 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:08,021 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-28 23:21:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:21:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:21:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:08,023 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:21:08,023 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:21:08,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:21:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 115. [2021-10-28 23:21:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 111 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2021-10-28 23:21:08,032 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 21 [2021-10-28 23:21:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:08,032 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2021-10-28 23:21:08,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2021-10-28 23:21:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:21:08,033 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:08,034 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:08,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:21:08,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash 296118255, now seen corresponding path program 1 times [2021-10-28 23:21:08,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:08,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814251641] [2021-10-28 23:21:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:08,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:08,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:08,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814251641] [2021-10-28 23:21:08,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814251641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:08,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:08,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:21:08,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492907658] [2021-10-28 23:21:08,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:08,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:08,246 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:08,748 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2021-10-28 23:21:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:21:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:21:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:08,750 INFO L225 Difference]: With dead ends: 159 [2021-10-28 23:21:08,751 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:21:08,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:21:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:21:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2021-10-28 23:21:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-28 23:21:08,760 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 21 [2021-10-28 23:21:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:08,761 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-28 23:21:08,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-28 23:21:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:21:08,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:08,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:08,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:21:08,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1432577259, now seen corresponding path program 1 times [2021-10-28 23:21:08,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:08,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345468792] [2021-10-28 23:21:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:08,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:08,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:08,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345468792] [2021-10-28 23:21:08,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345468792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:08,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:08,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:21:08,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558047786] [2021-10-28 23:21:08,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:21:08,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:21:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:21:08,894 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:09,179 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-10-28 23:21:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:21:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 23:21:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:09,182 INFO L225 Difference]: With dead ends: 191 [2021-10-28 23:21:09,182 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 23:21:09,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 23:21:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 110. [2021-10-28 23:21:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 states have internal predecessors, (123), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-10-28 23:21:09,205 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 22 [2021-10-28 23:21:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:09,206 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-10-28 23:21:09,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-10-28 23:21:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:21:09,218 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:09,218 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:09,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:21:09,218 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239013, now seen corresponding path program 1 times [2021-10-28 23:21:09,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:09,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807030871] [2021-10-28 23:21:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:09,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:09,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:09,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807030871] [2021-10-28 23:21:09,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807030871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:09,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:09,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:21:09,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207028511] [2021-10-28 23:21:09,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:09,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:09,335 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:09,643 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2021-10-28 23:21:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:21:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:21:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:09,645 INFO L225 Difference]: With dead ends: 138 [2021-10-28 23:21:09,646 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 23:21:09,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 23:21:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 108. [2021-10-28 23:21:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 104 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-10-28 23:21:09,653 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 24 [2021-10-28 23:21:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:09,653 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-10-28 23:21:09,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-10-28 23:21:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:21:09,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:09,654 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:09,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:21:09,655 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1350239012, now seen corresponding path program 1 times [2021-10-28 23:21:09,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:09,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737423480] [2021-10-28 23:21:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:09,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:21:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:09,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:21:09,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737423480] [2021-10-28 23:21:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737423480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:09,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:21:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203288899] [2021-10-28 23:21:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:21:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:21:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:21:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:21:09,770 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:10,161 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-10-28 23:21:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:21:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:21:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:10,163 INFO L225 Difference]: With dead ends: 136 [2021-10-28 23:21:10,163 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 23:21:10,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:21:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 23:21:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 93. [2021-10-28 23:21:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-10-28 23:21:10,169 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 24 [2021-10-28 23:21:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:10,169 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-10-28 23:21:10,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-10-28 23:21:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:21:10,170 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:10,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:10,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:21:10,171 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2025386131, now seen corresponding path program 1 times [2021-10-28 23:21:10,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:21:10,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056706003] [2021-10-28 23:21:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:10,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:21:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:10,189 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:21:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:10,230 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:21:10,231 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:21:10,232 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:21:10,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:21:10,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:21:10,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:21:10,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:21:10,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:21:10,235 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:21:10,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:21:10,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:21:10,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:21:10,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:21:10,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:21:10,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:21:10,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:21:10,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:21:10,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:10,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:21:10,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:21:10,244 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:10,247 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:21:10,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:21:10 BoogieIcfgContainer [2021-10-28 23:21:10,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:21:10,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:21:10,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:21:10,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:21:10,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:05" (3/4) ... [2021-10-28 23:21:10,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:21:10,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:21:10,288 INFO L168 Benchmark]: Toolchain (without parser) took 5965.61 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 50.3 MB in the beginning and 90.6 MB in the end (delta: -40.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:10,289 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 56.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:21:10,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.85 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 72.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:10,292 INFO L168 Benchmark]: Boogie Preprocessor took 77.72 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 69.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:10,295 INFO L168 Benchmark]: RCFGBuilder took 843.34 ms. Allocated memory is still 104.9 MB. Free memory was 69.2 MB in the beginning and 68.3 MB in the end (delta: 901.4 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:10,296 INFO L168 Benchmark]: TraceAbstraction took 4448.83 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 67.8 MB in the beginning and 90.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:10,296 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 134.2 MB. Free memory is still 90.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:21:10,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 56.0 MB in the beginning and 56.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 583.85 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 72.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.72 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 69.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 843.34 ms. Allocated memory is still 104.9 MB. Free memory was 69.2 MB in the beginning and 68.3 MB in the end (delta: 901.4 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4448.83 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 67.8 MB in the beginning and 90.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.94 ms. Allocated memory is still 134.2 MB. Free memory is still 90.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 117 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 578 SDtfs, 865 SDslu, 1008 SDs, 0 SdLazy, 2288 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 17/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:21:10,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:21:13,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:21:13,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:21:13,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:21:13,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:21:13,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:21:13,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:21:13,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:21:13,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:21:13,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:21:13,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:21:13,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:21:13,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:21:13,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:21:13,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:21:13,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:21:13,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:21:13,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:21:13,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:21:13,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:21:13,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:21:13,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:21:13,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:21:13,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:21:13,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:21:13,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:21:13,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:21:13,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:21:13,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:21:13,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:21:13,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:21:13,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:21:13,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:21:13,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:21:13,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:21:13,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:21:13,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:21:13,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:21:13,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:21:13,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:21:13,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:21:13,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:21:13,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:21:13,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:21:13,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:21:13,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:21:13,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:21:13,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:21:13,266 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:21:13,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:21:13,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:21:13,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:21:13,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:21:13,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:21:13,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:21:13,269 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:21:13,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:21:13,270 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:21:13,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:21:13,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:21:13,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:21:13,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:21:13,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:21:13,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:21:13,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:21:13,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:21:13,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:21:13,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:21:13,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:21:13,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:21:13,274 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:21:13,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:21:13,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:21:13,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:21:13,275 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-10-28 23:21:13,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:21:13,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:21:13,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:21:13,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:21:13,697 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:21:13,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 23:21:13,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/d90e15e2f/8df0e4cd9deb47f7b7a4d7b8cdd9f70d/FLAGc43d2d1a4 [2021-10-28 23:21:14,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:21:14,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-10-28 23:21:14,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/d90e15e2f/8df0e4cd9deb47f7b7a4d7b8cdd9f70d/FLAGc43d2d1a4 [2021-10-28 23:21:14,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/data/d90e15e2f/8df0e4cd9deb47f7b7a4d7b8cdd9f70d [2021-10-28 23:21:14,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:21:14,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:21:14,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:14,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:21:14,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:21:14,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:14" (1/1) ... [2021-10-28 23:21:14,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6632a536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:14, skipping insertion in model container [2021-10-28 23:21:14,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:21:14" (1/1) ... [2021-10-28 23:21:14,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:21:14,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:21:15,127 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 23:21:15,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:15,162 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:21:15,224 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-10-28 23:21:15,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:21:15,308 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:21:15,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15 WrapperNode [2021-10-28 23:21:15,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:21:15,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:21:15,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:21:15,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:21:15,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:21:15,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:21:15,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:21:15,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:21:15,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (1/1) ... [2021-10-28 23:21:15,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:21:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:21:15,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:21:15,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:21:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:21:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:21:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:21:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:21:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:21:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:21:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:21:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:21:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:21:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 23:21:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:21:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:21:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:21:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:21:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:21:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:21:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:21:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:21:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:21:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:21:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:21:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:21:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:21:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:21:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:21:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:21:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:21:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:21:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:21:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:21:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:21:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 23:21:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:21:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:21:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:21:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:21:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:21:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:21:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:21:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:21:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:21:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:21:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:21:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:21:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:21:15,942 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 23:21:16,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:21:16,436 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:21:16,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:16 BoogieIcfgContainer [2021-10-28 23:21:16,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:21:16,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:21:16,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:21:16,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:21:16,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:21:14" (1/3) ... [2021-10-28 23:21:16,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:16, skipping insertion in model container [2021-10-28 23:21:16,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:21:15" (2/3) ... [2021-10-28 23:21:16,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:21:16, skipping insertion in model container [2021-10-28 23:21:16,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:16" (3/3) ... [2021-10-28 23:21:16,449 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-10-28 23:21:16,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:21:16,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-28 23:21:16,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:21:16,528 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:21:16,528 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-28 23:21:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:21:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:21:16,568 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:16,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:16,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:16,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184920, now seen corresponding path program 1 times [2021-10-28 23:21:16,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:16,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079610268] [2021-10-28 23:21:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:16,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:16,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:16,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:21:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:16,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:21:16,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:16,906 INFO L388 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 [2021-10-28 23:21:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:16,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:17,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:17,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079610268] [2021-10-28 23:21:17,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079610268] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:17,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:17,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:21:17,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153711238] [2021-10-28 23:21:17,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:21:17,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:21:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:21:17,098 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 88 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:17,507 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-10-28 23:21:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:21:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:21:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:17,517 INFO L225 Difference]: With dead ends: 111 [2021-10-28 23:21:17,517 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 23:21:17,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:21:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 23:21:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2021-10-28 23:21:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 79 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2021-10-28 23:21:17,560 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 10 [2021-10-28 23:21:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:17,561 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2021-10-28 23:21:17,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2021-10-28 23:21:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:21:17,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:17,562 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:17,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:17,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:17,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1300184921, now seen corresponding path program 1 times [2021-10-28 23:21:17,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:17,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424317437] [2021-10-28 23:21:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:17,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:17,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:17,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:21:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:17,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:21:17,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:17,948 INFO L388 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 [2021-10-28 23:21:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:18,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:18,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:18,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424317437] [2021-10-28 23:21:18,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424317437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:18,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:18,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 23:21:18,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272993624] [2021-10-28 23:21:18,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:21:18,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:21:18,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:21:18,182 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:18,904 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 23:21:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:21:18,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 23:21:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:18,907 INFO L225 Difference]: With dead ends: 119 [2021-10-28 23:21:18,907 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 23:21:18,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:21:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 23:21:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2021-10-28 23:21:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 97 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-10-28 23:21:18,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 10 [2021-10-28 23:21:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:18,919 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-10-28 23:21:18,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-10-28 23:21:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:21:18,921 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:18,921 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:18,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:19,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:19,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:19,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159409, now seen corresponding path program 1 times [2021-10-28 23:21:19,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:19,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058693734] [2021-10-28 23:21:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:19,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:19,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:19,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:21:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:19,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:21:19,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:19,324 INFO L388 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 [2021-10-28 23:21:19,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2021-10-28 23:21:19,405 INFO L388 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 25 treesize of output 13 [2021-10-28 23:21:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:19,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:19,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:19,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058693734] [2021-10-28 23:21:19,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058693734] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:19,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:19,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:21:19,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651701294] [2021-10-28 23:21:19,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:21:19,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:21:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:21:19,533 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:20,280 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2021-10-28 23:21:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:21:20,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:21:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:20,283 INFO L225 Difference]: With dead ends: 140 [2021-10-28 23:21:20,283 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:21:20,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:21:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 103. [2021-10-28 23:21:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 99 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2021-10-28 23:21:20,293 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2021-10-28 23:21:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:20,293 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2021-10-28 23:21:20,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2021-10-28 23:21:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:21:20,295 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:20,295 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:20,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:20,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:20,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1952159408, now seen corresponding path program 1 times [2021-10-28 23:21:20,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:20,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058361175] [2021-10-28 23:21:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:20,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:20,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:20,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:20,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:21:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:20,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:21:20,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:20,694 INFO L388 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 [2021-10-28 23:21:20,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:21:20,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-10-28 23:21:20,788 INFO L388 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 39 treesize of output 27 [2021-10-28 23:21:20,800 INFO L388 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 24 treesize of output 12 [2021-10-28 23:21:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:21,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:21,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058361175] [2021-10-28 23:21:21,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058361175] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:21,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:21,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:21:21,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041426631] [2021-10-28 23:21:21,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:21:21,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:21:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:21,259 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:22,901 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-10-28 23:21:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:21:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:22,903 INFO L225 Difference]: With dead ends: 145 [2021-10-28 23:21:22,903 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 23:21:22,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:21:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 23:21:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2021-10-28 23:21:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 87 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-10-28 23:21:22,911 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 17 [2021-10-28 23:21:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:22,912 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-10-28 23:21:22,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-10-28 23:21:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:21:22,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:22,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:22,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:23,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:23,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2002045966, now seen corresponding path program 1 times [2021-10-28 23:21:23,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:23,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126717841] [2021-10-28 23:21:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:23,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:23,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:23,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:23,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:21:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:23,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:21:23,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:23,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:21:23,383 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-28 23:21:23,383 INFO L388 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 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-28 23:21:23,439 INFO L388 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 15 treesize of output 7 [2021-10-28 23:21:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:23,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:23,584 INFO L388 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 148 treesize of output 140 [2021-10-28 23:21:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:23,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:23,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126717841] [2021-10-28 23:21:23,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126717841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:23,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:23,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-28 23:21:23,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471964081] [2021-10-28 23:21:23,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:21:23,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:21:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:21:23,724 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:24,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:24,540 INFO L93 Difference]: Finished difference Result 192 states and 204 transitions. [2021-10-28 23:21:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:21:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:21:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:24,542 INFO L225 Difference]: With dead ends: 192 [2021-10-28 23:21:24,543 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 23:21:24,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:21:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 23:21:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 98. [2021-10-28 23:21:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 94 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-10-28 23:21:24,569 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 18 [2021-10-28 23:21:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:24,570 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-10-28 23:21:24,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-10-28 23:21:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:21:24,572 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:24,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:24,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 23:21:24,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:24,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494057, now seen corresponding path program 1 times [2021-10-28 23:21:24,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:24,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122406228] [2021-10-28 23:21:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:24,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:24,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:24,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:21:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:24,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:21:24,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:25,026 INFO L388 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 [2021-10-28 23:21:25,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-10-28 23:21:25,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:21:25,117 INFO L388 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 39 treesize of output 27 [2021-10-28 23:21:25,122 INFO L388 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 24 treesize of output 12 [2021-10-28 23:21:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:25,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:25,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:25,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122406228] [2021-10-28 23:21:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122406228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:25,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:25,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 23:21:25,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663009100] [2021-10-28 23:21:25,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:21:25,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:21:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:21:25,534 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:27,252 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-10-28 23:21:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:21:27,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:21:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:27,254 INFO L225 Difference]: With dead ends: 124 [2021-10-28 23:21:27,254 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 23:21:27,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:21:27,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 23:21:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2021-10-28 23:21:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 84 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-10-28 23:21:27,263 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-10-28 23:21:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:27,263 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-10-28 23:21:27,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-10-28 23:21:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:21:27,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:27,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:27,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:27,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:27,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1259494058, now seen corresponding path program 1 times [2021-10-28 23:21:27,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:27,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633725949] [2021-10-28 23:21:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:27,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:27,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:27,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:21:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:21:27,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:21:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:21:27,755 INFO L388 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 [2021-10-28 23:21:27,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2021-10-28 23:21:27,797 INFO L388 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 25 treesize of output 13 [2021-10-28 23:21:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:27,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:21:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:21:27,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:21:27,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633725949] [2021-10-28 23:21:27,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633725949] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:21:27,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:21:27,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:21:27,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060750448] [2021-10-28 23:21:27,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:21:27,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:21:27,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:21:27,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:21:27,917 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:21:28,395 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-10-28 23:21:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:21:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:21:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:21:28,401 INFO L225 Difference]: With dead ends: 113 [2021-10-28 23:21:28,401 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 23:21:28,401 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:21:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 23:21:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 83. [2021-10-28 23:21:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 79 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-10-28 23:21:28,410 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 18 [2021-10-28 23:21:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:21:28,411 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-10-28 23:21:28,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:21:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-10-28 23:21:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:21:28,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:21:28,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:28,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:28,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:28,619 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 33 more)] === [2021-10-28 23:21:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:21:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 131545524, now seen corresponding path program 1 times [2021-10-28 23:21:28,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:21:28,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779623794] [2021-10-28 23:21:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:21:28,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:21:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:21:28,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:21:28,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:21:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:28,833 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:21:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:21:28,906 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:21:28,906 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:21:28,907 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:21:28,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:21:28,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:21:28,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:21:28,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:21:28,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:21:28,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:21:28,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:21:28,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:21:28,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:21:28,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:21:28,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:21:28,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:21:28,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:21:28,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:21:28,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:21:28,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:21:28,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:21:28,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:21:28,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:21:28,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:21:28,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,916 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:21:28,917 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:21:28,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:21:29,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:21:29,137 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:21:29,141 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:21:29,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:21:29 BoogieIcfgContainer [2021-10-28 23:21:29,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:21:29,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:21:29,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:21:29,165 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:21:29,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:21:16" (3/4) ... [2021-10-28 23:21:29,173 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:21:29,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:21:29,175 INFO L168 Benchmark]: Toolchain (without parser) took 14413.84 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 28.8 MB in the beginning and 57.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,175 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:21:29,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.09 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 34.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,176 INFO L168 Benchmark]: Boogie Preprocessor took 76.96 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 31.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,177 INFO L168 Benchmark]: RCFGBuilder took 1051.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 41.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,177 INFO L168 Benchmark]: TraceAbstraction took 12721.54 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 40.8 MB in the beginning and 24.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,178 INFO L168 Benchmark]: Witness Printer took 9.54 ms. Allocated memory is still 81.8 MB. Free memory was 24.9 MB in the beginning and 57.8 MB in the end (delta: -32.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:21:29,180 INFO L339 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 54.5 MB. Free memory was 34.4 MB in the beginning and 34.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 542.09 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 34.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.96 ms. Allocated memory is still 54.5 MB. Free memory was 34.5 MB in the beginning and 31.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1051.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 41.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12721.54 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 40.8 MB in the beginning and 24.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * Witness Printer took 9.54 ms. Allocated memory is still 81.8 MB. Free memory was 24.9 MB in the beginning and 57.8 MB in the end (delta: -32.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={1:0}, i=0, p={1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={1:0}, i=0, p={1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={1:0}, i=0, p={1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={1:0}, i=0, p={1:0}, y=0] [L560] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={1:0}, i=0, p={1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={1:0}, i=0, p={1:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 1052 SDslu, 1045 SDs, 0 SdLazy, 1679 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=3, InterpolantAutomatonStates: 56, 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, 289 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 202 ConstructedInterpolants, 1 QuantifiedInterpolants, 1010 SizeOfPredicates, 31 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:21:29,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24bcb8da-7c04-49b0-bd41-ca92f7c96c98/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...