./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be --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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be --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 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:09:53,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:09:53,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:09:53,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:09:53,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:09:53,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:09:53,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:09:53,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:09:53,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:09:53,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:09:53,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:09:53,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:09:53,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:09:53,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:09:53,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:09:53,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:09:53,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:09:53,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:09:53,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:09:53,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:09:53,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:09:53,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:09:53,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:09:53,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:09:53,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:09:53,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:09:53,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:09:53,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:09:53,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:09:53,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:09:53,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:09:53,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:09:53,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:09:53,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:09:53,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:09:53,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:09:53,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:09:53,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:09:53,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:09:53,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:09:53,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:09:53,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:09:53,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:09:53,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:09:53,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:09:53,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:09:53,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:09:53,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:09:53,972 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:09:53,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:09:53,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:09:53,973 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:09:53,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:09:53,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:09:53,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:09:53,976 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:09:53,976 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:09:53,976 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:09:53,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:09:53,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:09:53,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:09:53,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:09:53,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:09:53,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:09:53,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:09:53,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:09:53,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:09:53,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:09:53,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:09:53,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:09:53,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:09:53,981 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-21 20:09:54,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:09:54,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:09:54,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:09:54,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:09:54,233 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:09:54,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:09:54,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/6c9050d91/b67c0c3b2c1a45f480479eafed049009/FLAG6403d56ee [2021-10-21 20:09:54,848 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:09:54,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:09:54,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/6c9050d91/b67c0c3b2c1a45f480479eafed049009/FLAG6403d56ee [2021-10-21 20:09:55,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/6c9050d91/b67c0c3b2c1a45f480479eafed049009 [2021-10-21 20:09:55,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:09:55,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:09:55,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:09:55,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:09:55,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:09:55,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31272a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55, skipping insertion in model container [2021-10-21 20:09:55,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:09:55,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:09:55,500 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:09:55,503 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:09:55,505 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:09:55,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:09:55,518 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:09:55,552 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:09:55,553 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:09:55,555 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:09:55,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:09:55,589 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:09:55,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55 WrapperNode [2021-10-21 20:09:55,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:09:55,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:09:55,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:09:55,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:09:55,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:09:55,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:09:55,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:09:55,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:09:55,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (1/1) ... [2021-10-21 20:09:55,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:09:55,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:09:55,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:09:55,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:09:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:09:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:09:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:09:55,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:09:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:09:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:09:55,729 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:09:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:09:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:09:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:09:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:09:55,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:09:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:09:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:09:55,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:09:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:09:55,735 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:09:55,736 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:09:55,737 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 20:09:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:09:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:09:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:09:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:09:55,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:09:55,739 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:09:55,740 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:09:55,741 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:09:55,742 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:09:55,743 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:09:55,744 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:09:55,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:09:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:09:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:09:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:09:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:09:56,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:09:56,506 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 20:09:56,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:09:56 BoogieIcfgContainer [2021-10-21 20:09:56,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:09:56,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:09:56,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:09:56,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:09:56,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:09:55" (1/3) ... [2021-10-21 20:09:56,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cfd605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:09:56, skipping insertion in model container [2021-10-21 20:09:56,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:09:55" (2/3) ... [2021-10-21 20:09:56,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cfd605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:09:56, skipping insertion in model container [2021-10-21 20:09:56,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:09:56" (3/3) ... [2021-10-21 20:09:56,556 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-21 20:09:56,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:09:56,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-21 20:09:56,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:09:56,612 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 [2021-10-21 20:09:56,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-21 20:09:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:09:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:09:56,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:56,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:56,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:56,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1707240052, now seen corresponding path program 1 times [2021-10-21 20:09:56,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:56,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70973745] [2021-10-21 20:09:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:56,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:56,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70973745] [2021-10-21 20:09:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70973745] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:56,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:56,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:09:56,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557444086] [2021-10-21 20:09:56,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:09:56,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:09:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:09:57,009 INFO L87 Difference]: Start difference. First operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:09:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:57,304 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-10-21 20:09:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:09:57,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-10-21 20:09:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:57,319 INFO L225 Difference]: With dead ends: 143 [2021-10-21 20:09:57,320 INFO L226 Difference]: Without dead ends: 139 [2021-10-21 20:09:57,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:09:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-21 20:09:57,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-10-21 20:09:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 131 states have internal predecessors, (139), 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) [2021-10-21 20:09:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-10-21 20:09:57,377 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 7 [2021-10-21 20:09:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:57,377 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-10-21 20:09:57,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:09:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-10-21 20:09:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:09:57,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:57,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:57,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:09:57,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1707240051, now seen corresponding path program 1 times [2021-10-21 20:09:57,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:57,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585530093] [2021-10-21 20:09:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:57,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:57,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:57,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585530093] [2021-10-21 20:09:57,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585530093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:57,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:57,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:09:57,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446390244] [2021-10-21 20:09:57,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:09:57,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:09:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:09:57,473 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:09:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:57,735 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-10-21 20:09:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:09:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-10-21 20:09:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:57,737 INFO L225 Difference]: With dead ends: 152 [2021-10-21 20:09:57,738 INFO L226 Difference]: Without dead ends: 152 [2021-10-21 20:09:57,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:09:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-21 20:09:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2021-10-21 20:09:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 135 states have internal predecessors, (143), 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) [2021-10-21 20:09:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2021-10-21 20:09:57,749 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 7 [2021-10-21 20:09:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:57,750 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2021-10-21 20:09:57,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:09:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2021-10-21 20:09:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:09:57,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:57,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:57,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:09:57,751 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:57,752 INFO L82 PathProgramCache]: Analyzing trace with hash 152402486, now seen corresponding path program 1 times [2021-10-21 20:09:57,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:57,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673557829] [2021-10-21 20:09:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:57,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:57,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:57,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673557829] [2021-10-21 20:09:57,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673557829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:57,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:57,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:09:57,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516272343] [2021-10-21 20:09:57,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:09:57,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:09:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:09:57,990 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-21 20:09:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:58,342 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2021-10-21 20:09:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:09:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-10-21 20:09:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:58,344 INFO L225 Difference]: With dead ends: 192 [2021-10-21 20:09:58,344 INFO L226 Difference]: Without dead ends: 192 [2021-10-21 20:09:58,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:09:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-21 20:09:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2021-10-21 20:09:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 150 states have internal predecessors, (171), 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) [2021-10-21 20:09:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-10-21 20:09:58,355 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 13 [2021-10-21 20:09:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:58,356 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-10-21 20:09:58,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-21 20:09:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-10-21 20:09:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:09:58,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:58,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:58,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:09:58,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:58,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash 152402485, now seen corresponding path program 1 times [2021-10-21 20:09:58,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:58,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557039700] [2021-10-21 20:09:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:58,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:58,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:58,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557039700] [2021-10-21 20:09:58,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557039700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:58,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:58,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:09:58,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516122291] [2021-10-21 20:09:58,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:09:58,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:09:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:09:58,453 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-21 20:09:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:58,702 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-10-21 20:09:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:09:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-10-21 20:09:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:58,705 INFO L225 Difference]: With dead ends: 156 [2021-10-21 20:09:58,705 INFO L226 Difference]: Without dead ends: 156 [2021-10-21 20:09:58,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:09:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-21 20:09:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-10-21 20:09:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 138 states have internal predecessors, (153), 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) [2021-10-21 20:09:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2021-10-21 20:09:58,715 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 13 [2021-10-21 20:09:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:58,715 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2021-10-21 20:09:58,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-21 20:09:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2021-10-21 20:09:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:09:58,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:58,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:58,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:09:58,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash 429896239, now seen corresponding path program 1 times [2021-10-21 20:09:58,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:58,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918599109] [2021-10-21 20:09:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:58,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:58,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:58,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918599109] [2021-10-21 20:09:58,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918599109] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:58,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:58,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:09:58,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014052292] [2021-10-21 20:09:58,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:09:58,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:09:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:09:58,807 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-21 20:09:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:59,014 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-10-21 20:09:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:09:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2021-10-21 20:09:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:59,016 INFO L225 Difference]: With dead ends: 158 [2021-10-21 20:09:59,016 INFO L226 Difference]: Without dead ends: 158 [2021-10-21 20:09:59,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:09:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-21 20:09:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2021-10-21 20:09:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.5360824742268042) internal successors, (149), 136 states have internal predecessors, (149), 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) [2021-10-21 20:09:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2021-10-21 20:09:59,024 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2021-10-21 20:09:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:59,025 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2021-10-21 20:09:59,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-21 20:09:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2021-10-21 20:09:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:09:59,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:59,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:59,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:09:59,026 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:59,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:59,027 INFO L82 PathProgramCache]: Analyzing trace with hash 442001777, now seen corresponding path program 1 times [2021-10-21 20:09:59,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:59,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005021210] [2021-10-21 20:09:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:59,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:59,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:59,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005021210] [2021-10-21 20:09:59,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005021210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:59,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:59,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:09:59,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204397606] [2021-10-21 20:09:59,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:09:59,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:09:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:09:59,122 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 20:09:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:59,372 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-10-21 20:09:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:09:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-10-21 20:09:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:59,374 INFO L225 Difference]: With dead ends: 139 [2021-10-21 20:09:59,374 INFO L226 Difference]: Without dead ends: 139 [2021-10-21 20:09:59,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:09:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-21 20:09:59,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-21 20:09:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 135 states have internal predecessors, (147), 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) [2021-10-21 20:09:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-10-21 20:09:59,389 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 16 [2021-10-21 20:09:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:59,389 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-10-21 20:09:59,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 20:09:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-10-21 20:09:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 20:09:59,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:59,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:59,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:09:59,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:59,391 INFO L82 PathProgramCache]: Analyzing trace with hash 442001778, now seen corresponding path program 1 times [2021-10-21 20:09:59,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:59,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503797248] [2021-10-21 20:09:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:59,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:59,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:59,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503797248] [2021-10-21 20:09:59,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503797248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:59,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:59,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:09:59,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498998961] [2021-10-21 20:09:59,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:09:59,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:09:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:09:59,511 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 20:09:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:59,758 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-10-21 20:09:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:09:59,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-10-21 20:09:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:59,760 INFO L225 Difference]: With dead ends: 138 [2021-10-21 20:09:59,760 INFO L226 Difference]: Without dead ends: 138 [2021-10-21 20:09:59,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:09:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-21 20:09:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-21 20:09:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 134 states have internal predecessors, (145), 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) [2021-10-21 20:09:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-10-21 20:09:59,772 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 16 [2021-10-21 20:09:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:59,772 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-10-21 20:09:59,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-21 20:09:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-10-21 20:09:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:09:59,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:59,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:59,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:09:59,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:09:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash -549611590, now seen corresponding path program 1 times [2021-10-21 20:09:59,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:09:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642713380] [2021-10-21 20:09:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:59,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:09:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:09:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:59,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:09:59,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642713380] [2021-10-21 20:09:59,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642713380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:59,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:59,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:09:59,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607983631] [2021-10-21 20:09:59,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:09:59,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:09:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:09:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:09:59,898 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-21 20:10:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:00,181 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2021-10-21 20:10:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:10:00,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-10-21 20:10:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:00,183 INFO L225 Difference]: With dead ends: 198 [2021-10-21 20:10:00,183 INFO L226 Difference]: Without dead ends: 198 [2021-10-21 20:10:00,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:10:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-21 20:10:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2021-10-21 20:10:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 139 states have internal predecessors, (150), 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) [2021-10-21 20:10:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-10-21 20:10:00,189 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2021-10-21 20:10:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:00,189 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-10-21 20:10:00,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-10-21 20:10:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-10-21 20:10:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:10:00,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:00,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:00,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:10:00,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:00,191 INFO L82 PathProgramCache]: Analyzing trace with hash -63373389, now seen corresponding path program 1 times [2021-10-21 20:10:00,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:00,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866523639] [2021-10-21 20:10:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:00,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:10:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:00,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:00,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866523639] [2021-10-21 20:10:00,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866523639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:00,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:00,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:10:00,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410953405] [2021-10-21 20:10:00,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:10:00,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:10:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:10:00,339 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-21 20:10:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:00,710 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-10-21 20:10:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:10:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 20 [2021-10-21 20:10:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:00,712 INFO L225 Difference]: With dead ends: 143 [2021-10-21 20:10:00,712 INFO L226 Difference]: Without dead ends: 143 [2021-10-21 20:10:00,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:10:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-21 20:10:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-10-21 20:10:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 138 states have internal predecessors, (149), 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) [2021-10-21 20:10:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-10-21 20:10:00,716 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2021-10-21 20:10:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:00,717 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-10-21 20:10:00,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-21 20:10:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-10-21 20:10:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:10:00,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:00,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:00,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:10:00,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash -63373388, now seen corresponding path program 1 times [2021-10-21 20:10:00,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:00,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103773013] [2021-10-21 20:10:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:00,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:10:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:00,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:10:00,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103773013] [2021-10-21 20:10:00,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103773013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:00,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:00,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:10:00,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599539858] [2021-10-21 20:10:00,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:10:00,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:10:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:10:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:10:00,918 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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) [2021-10-21 20:10:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:01,562 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-10-21 20:10:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:10:01,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 20 [2021-10-21 20:10:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:01,563 INFO L225 Difference]: With dead ends: 147 [2021-10-21 20:10:01,564 INFO L226 Difference]: Without dead ends: 147 [2021-10-21 20:10:01,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 299.9ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-21 20:10:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-21 20:10:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-10-21 20:10:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 134 states have internal predecessors, (146), 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) [2021-10-21 20:10:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-10-21 20:10:01,568 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 20 [2021-10-21 20:10:01,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:01,568 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-10-21 20:10:01,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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) [2021-10-21 20:10:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-10-21 20:10:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:10:01,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:01,570 INFO L512 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] [2021-10-21 20:10:01,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:10:01,570 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:01,570 INFO L82 PathProgramCache]: Analyzing trace with hash -195087453, now seen corresponding path program 1 times [2021-10-21 20:10:01,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:10:01,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490914132] [2021-10-21 20:10:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:01,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:10:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:01,582 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:10:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:10:01,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:10:01,615 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:10:01,616 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:10:01,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:10:01,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:10:01,620 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 20:10:01,621 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-21 20:10:01,622 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-21 20:10:01,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-21 20:10:01,624 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,625 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:10:01,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:10:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:10:01,632 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:10:01,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:10:01 BoogieIcfgContainer [2021-10-21 20:10:01,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:10:01,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:10:01,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:10:01,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:10:01,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:09:56" (3/4) ... [2021-10-21 20:10:01,660 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:10:01,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:10:01,661 INFO L168 Benchmark]: Toolchain (without parser) took 6502.58 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 91.9 MB in the beginning and 50.9 MB in the end (delta: 41.0 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:10:01,661 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 76.2 MB in the end (delta: 53.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:10:01,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.50 ms. Allocated memory is still 121.6 MB. Free memory was 91.8 MB in the beginning and 88.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:10:01,662 INFO L168 Benchmark]: Boogie Preprocessor took 61.03 ms. Allocated memory is still 121.6 MB. Free memory was 88.1 MB in the beginning and 85.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:10:01,663 INFO L168 Benchmark]: RCFGBuilder took 856.00 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 85.3 MB in the beginning and 134.7 MB in the end (delta: -49.5 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:10:01,663 INFO L168 Benchmark]: TraceAbstraction took 5138.31 ms. Allocated memory is still 163.6 MB. Free memory was 134.3 MB in the beginning and 50.9 MB in the end (delta: 83.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:10:01,663 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 163.6 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:10:01,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 121.6 MB. Free memory was 76.2 MB in the beginning and 76.2 MB in the end (delta: 53.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 431.50 ms. Allocated memory is still 121.6 MB. Free memory was 91.8 MB in the beginning and 88.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.03 ms. Allocated memory is still 121.6 MB. Free memory was 88.1 MB in the beginning and 85.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 856.00 ms. Allocated memory was 121.6 MB in the beginning and 163.6 MB in the end (delta: 41.9 MB). Free memory was 85.3 MB in the beginning and 134.7 MB in the end (delta: -49.5 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5138.31 ms. Allocated memory is still 163.6 MB. Free memory was 134.3 MB in the beginning and 50.9 MB in the end (delta: 83.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.70 ms. Allocated memory is still 163.6 MB. Free memory is still 50.9 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: 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 4 procedures, 146 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 5027.2ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 22.8ms, AutomataDifference: 3244.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 767 SDtfs, 1265 SDslu, 1106 SDs, 0 SdLazy, 3165 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2075.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 747.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 113.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 152 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.8ms SsaConstructionTime, 220.9ms SatisfiabilityAnalysisTime, 1096.6ms InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 [2021-10-21 20:10:01,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:10:04,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:10:04,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:10:04,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:10:04,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:10:04,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:10:04,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:10:04,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:10:04,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:10:04,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:10:04,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:10:04,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:10:04,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:10:04,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:10:04,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:10:04,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:10:04,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:10:04,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:10:04,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:10:04,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:10:04,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:10:04,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:10:04,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:10:04,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:10:04,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:10:04,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:10:04,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:10:04,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:10:04,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:10:04,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:10:04,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:10:04,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:10:04,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:10:04,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:10:04,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:10:04,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:10:04,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:10:04,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:10:04,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:10:04,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:10:04,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:10:04,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 20:10:04,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:10:04,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:10:04,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:10:04,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:10:04,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:10:04,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:10:04,354 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:10:04,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:10:04,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:10:04,354 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:10:04,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:10:04,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:10:04,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:10:04,356 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:10:04,356 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:10:04,356 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:10:04,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:10:04,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:10:04,357 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:10:04,357 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:10:04,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:10:04,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:10:04,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:10:04,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:10:04,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:10:04,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:10:04,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:10:04,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:10:04,359 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:10:04,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:10:04,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:10:04,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:10:04,360 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-21 20:10:04,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:10:04,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:10:04,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:10:04,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:10:04,788 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:10:04,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:10:04,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/73dcb0446/2022b0e821b74f4b9855b0193ab5f193/FLAGfe0bee5fb [2021-10-21 20:10:05,464 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:10:05,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:10:05,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/73dcb0446/2022b0e821b74f4b9855b0193ab5f193/FLAGfe0bee5fb [2021-10-21 20:10:05,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/data/73dcb0446/2022b0e821b74f4b9855b0193ab5f193 [2021-10-21 20:10:05,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:10:05,737 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:10:05,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:05,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:10:05,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:10:05,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:05" (1/1) ... [2021-10-21 20:10:05,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed1f024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:05, skipping insertion in model container [2021-10-21 20:10:05,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:10:05" (1/1) ... [2021-10-21 20:10:05,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:10:05,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:10:06,059 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:10:06,062 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:10:06,064 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:10:06,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:06,083 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:10:06,124 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:10:06,125 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:10:06,127 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_144ca5ca-49dc-4e8b-8f74-db2e312ae705/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:10:06,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:10:06,169 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:10:06,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06 WrapperNode [2021-10-21 20:10:06,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:10:06,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:10:06,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:10:06,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:10:06,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:10:06,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:10:06,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:10:06,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:10:06,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (1/1) ... [2021-10-21 20:10:06,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:10:06,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:10:06,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:10:06,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:10:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:10:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:10:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:10:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:10:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:10:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:10:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:10:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:10:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:10:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:10:06,356 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:10:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:10:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:10:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:10:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:10:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:10:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:10:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:10:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:10:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:10:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:10:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:10:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:10:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:10:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:10:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 20:10:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:10:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:10:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:10:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:10:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:10:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:10:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:10:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:10:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:10:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:10:06,369 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:10:06,369 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:10:06,370 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:10:06,371 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:10:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:10:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:10:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:10:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:10:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:10:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:10:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:10:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:10:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:10:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:10:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:10:06,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:10:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:10:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:10:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:10:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 20:10:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 20:10:06,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 20:10:07,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:10:07,349 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 20:10:07,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:07 BoogieIcfgContainer [2021-10-21 20:10:07,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:10:07,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:10:07,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:10:07,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:10:07,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:10:05" (1/3) ... [2021-10-21 20:10:07,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344040b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:10:07, skipping insertion in model container [2021-10-21 20:10:07,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:10:06" (2/3) ... [2021-10-21 20:10:07,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344040b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:10:07, skipping insertion in model container [2021-10-21 20:10:07,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:07" (3/3) ... [2021-10-21 20:10:07,370 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-21 20:10:07,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:10:07,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-21 20:10:07,423 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:10:07,429 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 [2021-10-21 20:10:07,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-21 20:10:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:10:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:10:07,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:07,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:07,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:07,459 INFO L82 PathProgramCache]: Analyzing trace with hash -486261088, now seen corresponding path program 1 times [2021-10-21 20:10:07,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:07,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437383950] [2021-10-21 20:10:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:07,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:07,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:07,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:10:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:07,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:10:07,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:07,754 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 [2021-10-21 20:10:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:07,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:07,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:07,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437383950] [2021-10-21 20:10:07,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437383950] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:07,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:07,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:10:07,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501270034] [2021-10-21 20:10:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:10:07,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:07,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:10:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:10:07,851 INFO L87 Difference]: Start difference. First operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:10:08,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:08,189 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-10-21 20:10:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:10:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-10-21 20:10:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:08,202 INFO L225 Difference]: With dead ends: 141 [2021-10-21 20:10:08,202 INFO L226 Difference]: Without dead ends: 137 [2021-10-21 20:10:08,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:10:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-21 20:10:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-10-21 20:10:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.9027777777777777) internal successors, (137), 129 states have internal predecessors, (137), 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) [2021-10-21 20:10:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-10-21 20:10:08,282 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 7 [2021-10-21 20:10:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:08,283 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-10-21 20:10:08,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-21 20:10:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-10-21 20:10:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:10:08,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:08,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:08,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:08,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:08,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:08,502 INFO L82 PathProgramCache]: Analyzing trace with hash -486261087, now seen corresponding path program 1 times [2021-10-21 20:10:08,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:08,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382109871] [2021-10-21 20:10:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:08,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:08,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:08,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:08,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:10:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:08,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:10:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:08,680 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 [2021-10-21 20:10:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:08,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:08,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:08,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382109871] [2021-10-21 20:10:08,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382109871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:08,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:08,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-21 20:10:08,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725388968] [2021-10-21 20:10:08,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:10:08,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:08,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:10:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:10:08,785 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-21 20:10:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:09,207 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-21 20:10:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:10:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2021-10-21 20:10:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:09,209 INFO L225 Difference]: With dead ends: 150 [2021-10-21 20:10:09,209 INFO L226 Difference]: Without dead ends: 150 [2021-10-21 20:10:09,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:10:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-21 20:10:09,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2021-10-21 20:10:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.7848101265822784) internal successors, (141), 133 states have internal predecessors, (141), 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) [2021-10-21 20:10:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2021-10-21 20:10:09,221 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 7 [2021-10-21 20:10:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:09,221 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2021-10-21 20:10:09,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-21 20:10:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2021-10-21 20:10:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:10:09,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:09,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:09,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:09,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:09,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:09,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:09,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1027877289, now seen corresponding path program 1 times [2021-10-21 20:10:09,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:09,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367470148] [2021-10-21 20:10:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:09,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:09,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:09,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:10:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:09,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:10:09,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:09,607 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 [2021-10-21 20:10:09,676 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 20:10:09,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-10-21 20:10:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:09,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:09,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:09,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367470148] [2021-10-21 20:10:09,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367470148] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:09,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:09,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-21 20:10:09,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476309329] [2021-10-21 20:10:09,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:10:09,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:10:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:10:09,815 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-21 20:10:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:10,250 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-21 20:10:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:10:10,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2021-10-21 20:10:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:10,253 INFO L225 Difference]: With dead ends: 142 [2021-10-21 20:10:10,253 INFO L226 Difference]: Without dead ends: 142 [2021-10-21 20:10:10,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:10:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-21 20:10:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-10-21 20:10:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.6341463414634145) internal successors, (134), 123 states have internal predecessors, (134), 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) [2021-10-21 20:10:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-21 20:10:10,262 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 12 [2021-10-21 20:10:10,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:10,263 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-21 20:10:10,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-21 20:10:10,263 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-21 20:10:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:10:10,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:10,264 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:10,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-21 20:10:10,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:10,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1027877290, now seen corresponding path program 1 times [2021-10-21 20:10:10,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:10,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318706465] [2021-10-21 20:10:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:10,480 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:10,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:10,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:10:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:10,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:10:10,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:10,663 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 [2021-10-21 20:10:10,668 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 [2021-10-21 20:10:10,846 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 20:10:10,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-21 20:10:10,862 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 20:10:10,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-10-21 20:10:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:10,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:13,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:13,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318706465] [2021-10-21 20:10:13,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318706465] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:13,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:13,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 20:10:13,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346108211] [2021-10-21 20:10:13,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:10:13,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:10:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-21 20:10:13,776 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-21 20:10:34,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:34,147 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-10-21 20:10:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:10:34,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 12 [2021-10-21 20:10:34,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:34,149 INFO L225 Difference]: With dead ends: 177 [2021-10-21 20:10:34,150 INFO L226 Difference]: Without dead ends: 177 [2021-10-21 20:10:34,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 17959.6ms TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-21 20:10:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-21 20:10:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 122. [2021-10-21 20:10:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 118 states have internal predecessors, (129), 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) [2021-10-21 20:10:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-21 20:10:34,158 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 12 [2021-10-21 20:10:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:34,159 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-21 20:10:34,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-10-21 20:10:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-21 20:10:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:10:34,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:34,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:34,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:34,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:34,371 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash -52407454, now seen corresponding path program 1 times [2021-10-21 20:10:34,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:34,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925404632] [2021-10-21 20:10:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:34,372 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:34,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:34,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:34,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:10:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:34,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:10:34,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:34,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:34,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:34,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925404632] [2021-10-21 20:10:34,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925404632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:34,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:34,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:10:34,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253567678] [2021-10-21 20:10:34,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:10:34,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:10:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:10:34,671 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-21 20:10:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:35,115 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-10-21 20:10:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:10:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2021-10-21 20:10:35,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:35,117 INFO L225 Difference]: With dead ends: 148 [2021-10-21 20:10:35,117 INFO L226 Difference]: Without dead ends: 148 [2021-10-21 20:10:35,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:10:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-21 20:10:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-10-21 20:10:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 116 states have internal predecessors, (125), 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) [2021-10-21 20:10:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-10-21 20:10:35,132 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 14 [2021-10-21 20:10:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:35,133 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-10-21 20:10:35,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-21 20:10:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-10-21 20:10:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:10:35,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:35,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:35,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:35,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:35,347 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1624480014, now seen corresponding path program 1 times [2021-10-21 20:10:35,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:35,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186075026] [2021-10-21 20:10:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:35,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:35,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:35,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:10:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:35,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:10:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:35,542 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 [2021-10-21 20:10:35,563 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 20 treesize of output 16 [2021-10-21 20:10:35,616 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 21 treesize of output 13 [2021-10-21 20:10:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:35,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:35,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:35,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186075026] [2021-10-21 20:10:35,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186075026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:35,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:35,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:10:35,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132830669] [2021-10-21 20:10:35,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:10:35,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:35,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:10:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:10:35,720 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-10-21 20:10:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:36,221 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-21 20:10:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:10:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 15 [2021-10-21 20:10:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:36,223 INFO L225 Difference]: With dead ends: 119 [2021-10-21 20:10:36,223 INFO L226 Difference]: Without dead ends: 119 [2021-10-21 20:10:36,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:10:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-21 20:10:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-21 20:10:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 115 states have internal predecessors, (124), 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) [2021-10-21 20:10:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-21 20:10:36,229 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 15 [2021-10-21 20:10:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:36,230 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-21 20:10:36,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2021-10-21 20:10:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-21 20:10:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:10:36,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:36,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:36,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:36,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:36,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1624480013, now seen corresponding path program 1 times [2021-10-21 20:10:36,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:36,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725126032] [2021-10-21 20:10:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:36,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:36,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:36,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:36,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:10:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:36,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:10:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:36,636 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 [2021-10-21 20:10:36,679 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 17 treesize of output 13 [2021-10-21 20:10:36,690 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 [2021-10-21 20:10:36,751 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 31 treesize of output 23 [2021-10-21 20:10:36,758 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 20 treesize of output 12 [2021-10-21 20:10:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:36,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:37,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:37,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725126032] [2021-10-21 20:10:37,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725126032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:37,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:37,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 20:10:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204924571] [2021-10-21 20:10:37,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:10:37,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:10:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:10:37,082 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-21 20:10:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:38,578 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-10-21 20:10:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:10:38,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 15 [2021-10-21 20:10:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:38,580 INFO L225 Difference]: With dead ends: 118 [2021-10-21 20:10:38,580 INFO L226 Difference]: Without dead ends: 118 [2021-10-21 20:10:38,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 344.4ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:10:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-21 20:10:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-21 20:10:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 114 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) [2021-10-21 20:10:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2021-10-21 20:10:38,585 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 15 [2021-10-21 20:10:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2021-10-21 20:10:38,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2021-10-21 20:10:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2021-10-21 20:10:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:10:38,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:38,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:38,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:38,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2101662523, now seen corresponding path program 1 times [2021-10-21 20:10:38,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:38,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129811052] [2021-10-21 20:10:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:38,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:38,790 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:38,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:10:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:38,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:10:38,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:38,959 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 [2021-10-21 20:10:39,035 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 19 treesize of output 7 [2021-10-21 20:10:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:39,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:39,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:39,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129811052] [2021-10-21 20:10:39,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129811052] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:39,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:39,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:10:39,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944348982] [2021-10-21 20:10:39,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:10:39,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:10:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:10:39,133 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-21 20:10:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:39,731 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-10-21 20:10:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:10:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2021-10-21 20:10:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:39,733 INFO L225 Difference]: With dead ends: 179 [2021-10-21 20:10:39,733 INFO L226 Difference]: Without dead ends: 179 [2021-10-21 20:10:39,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:10:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-21 20:10:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 124. [2021-10-21 20:10:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 120 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) [2021-10-21 20:10:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-10-21 20:10:39,748 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 17 [2021-10-21 20:10:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:39,748 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-10-21 20:10:39,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-21 20:10:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-10-21 20:10:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:10:39,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:39,750 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:39,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:39,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:39,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:39,962 INFO L82 PathProgramCache]: Analyzing trace with hash -739626508, now seen corresponding path program 1 times [2021-10-21 20:10:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:39,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669654294] [2021-10-21 20:10:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:39,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:39,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:39,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:10:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:40,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:10:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:40,173 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 [2021-10-21 20:10:40,266 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-21 20:10:40,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-10-21 20:10:40,337 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 24 treesize of output 20 [2021-10-21 20:10:40,579 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-21 20:10:40,579 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-10-21 20:10:40,738 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-21 20:10:40,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-10-21 20:10:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:40,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:10:43,032 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))))))))))))) (_ bv1 1)))) is different from false [2021-10-21 20:10:45,047 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.base))) c_main_~end~0.base) c_main_~end~0.offset)))))))))))))))))))) is different from false [2021-10-21 20:10:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:45,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:10:45,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669654294] [2021-10-21 20:10:45,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669654294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:10:45,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:10:45,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2021-10-21 20:10:45,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032524320] [2021-10-21 20:10:45,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:10:45,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:10:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:10:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=119, Unknown=2, NotChecked=46, Total=210 [2021-10-21 20:10:45,153 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 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) [2021-10-21 20:10:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:10:47,379 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-10-21 20:10:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:10:47,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 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 19 [2021-10-21 20:10:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:10:47,380 INFO L225 Difference]: With dead ends: 145 [2021-10-21 20:10:47,381 INFO L226 Difference]: Without dead ends: 145 [2021-10-21 20:10:47,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 5009.4ms TimeCoverageRelationStatistics Valid=134, Invalid=334, Unknown=2, NotChecked=82, Total=552 [2021-10-21 20:10:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-21 20:10:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-10-21 20:10:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 119 states have internal predecessors, (129), 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) [2021-10-21 20:10:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-10-21 20:10:47,386 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 19 [2021-10-21 20:10:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:10:47,386 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-10-21 20:10:47,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 15 states have internal predecessors, (30), 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) [2021-10-21 20:10:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-10-21 20:10:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:10:47,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:10:47,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:10:47,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:10:47,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:10:47,588 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:10:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:10:47,588 INFO L82 PathProgramCache]: Analyzing trace with hash -739626507, now seen corresponding path program 1 times [2021-10-21 20:10:47,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:10:47,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671336799] [2021-10-21 20:10:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:10:47,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:10:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:10:47,590 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:10:47,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:10:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:10:47,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:10:47,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:10:47,815 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 [2021-10-21 20:10:47,868 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 [2021-10-21 20:10:47,893 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 20:10:47,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-21 20:10:47,939 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 21 treesize of output 17 [2021-10-21 20:10:47,951 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 [2021-10-21 20:10:48,110 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-21 20:10:48,110 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-21 20:10:48,135 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-21 20:10:48,135 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 59 treesize of output 54 [2021-10-21 20:10:48,303 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-21 20:10:48,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-10-21 20:10:48,312 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-21 20:10:48,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-10-21 20:10:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:10:48,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:11:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:11:03,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:11:03,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671336799] [2021-10-21 20:11:03,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671336799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:11:03,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:11:03,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-21 20:11:03,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547263695] [2021-10-21 20:11:03,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 20:11:03,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:11:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:11:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2021-10-21 20:11:03,042 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-21 20:11:06,710 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_main_~end~0.offset)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (bvule .cse1 (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (bvule c_main_~end~0.offset .cse1) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) c_main_~end~0.offset)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse5) (_ bv12 32)) (not (= .cse5 c_main_~end~0.base)))) is different from false [2021-10-21 20:11:24,621 WARN L207 SmtUtils]: Spent 10.15 s on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-10-21 20:11:27,215 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse3 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse2) .cse3)) (= (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3) c_main_~end~0.offset)))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-21 20:11:33,489 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_main_~end~0.offset)) (.cse5 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (bvule .cse1 (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))) (bvule c_main_~end~0.offset .cse1) (exists ((|main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse4 (bvadd |main_#t~mem6.offset| (_ bv4 32)))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse3) .cse4)) (= (select (select |c_#memory_$Pointer$.offset| .cse3) .cse4) c_main_~end~0.offset)))) (= (select |c_#length| .cse5) (_ bv12 32)) (not (= .cse5 c_main_~end~0.base)))) is different from false [2021-10-21 20:11:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:11:34,068 INFO L93 Difference]: Finished difference Result 180 states and 193 transitions. [2021-10-21 20:11:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-21 20:11:34,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 19 [2021-10-21 20:11:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:11:34,070 INFO L225 Difference]: With dead ends: 180 [2021-10-21 20:11:34,070 INFO L226 Difference]: Without dead ends: 180 [2021-10-21 20:11:34,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 41150.9ms TimeCoverageRelationStatistics Valid=279, Invalid=987, Unknown=6, NotChecked=210, Total=1482 [2021-10-21 20:11:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-21 20:11:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 120. [2021-10-21 20:11:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.4) internal successors, (126), 116 states have internal predecessors, (126), 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) [2021-10-21 20:11:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2021-10-21 20:11:34,076 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 19 [2021-10-21 20:11:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:11:34,076 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2021-10-21 20:11:34,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-21 20:11:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2021-10-21 20:11:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:11:34,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:11:34,078 INFO L512 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] [2021-10-21 20:11:34,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:11:34,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:11:34,282 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-21 20:11:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:11:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1944702492, now seen corresponding path program 1 times [2021-10-21 20:11:34,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:11:34,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797391086] [2021-10-21 20:11:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:11:34,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:11:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:11:34,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:11:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:11:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:34,468 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:11:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:11:34,551 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:11:34,551 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:11:34,552 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:11:34,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:11:34,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:11:34,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:11:34,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:11:34,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:11:34,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:11:34,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:11:34,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-21 20:11:34,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:11:34,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:11:34,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:11:34,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:11:34,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-21 20:11:34,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-21 20:11:34,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-21 20:11:34,563 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-21 20:11:34,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-21 20:11:34,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-21 20:11:34,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-21 20:11:34,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-21 20:11:34,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-21 20:11:34,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-21 20:11:34,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-21 20:11:34,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-21 20:11:34,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-21 20:11:34,565 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-21 20:11:34,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-21 20:11:34,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:11:34,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-21 20:11:34,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-21 20:11:34,566 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-21 20:11:34,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-21 20:11:34,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-21 20:11:34,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-21 20:11:34,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-21 20:11:34,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-21 20:11:34,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-21 20:11:34,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-21 20:11:34,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-21 20:11:34,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-21 20:11:34,569 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-21 20:11:34,582 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:11:34,583 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:11:34,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:11:34,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:11:34,790 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:11:34,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:11:34 BoogieIcfgContainer [2021-10-21 20:11:34,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:11:34,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:11:34,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:11:34,814 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:11:34,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:10:07" (3/4) ... [2021-10-21 20:11:34,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:11:34,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:11:34,817 INFO L168 Benchmark]: Toolchain (without parser) took 89080.45 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 29.7 MB in the beginning and 27.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:34,817 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 34.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:34,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.31 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 24.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:34,818 INFO L168 Benchmark]: Boogie Preprocessor took 86.29 ms. Allocated memory is still 54.5 MB. Free memory was 24.4 MB in the beginning and 34.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:34,818 INFO L168 Benchmark]: RCFGBuilder took 1101.42 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 43.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:34,818 INFO L168 Benchmark]: TraceAbstraction took 87451.74 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.6 MB in the beginning and 27.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:11:34,819 INFO L168 Benchmark]: Witness Printer took 2.82 ms. Allocated memory is still 81.8 MB. Free memory is still 27.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:11:34,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 34.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 420.31 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 24.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.29 ms. Allocated memory is still 54.5 MB. Free memory was 24.4 MB in the beginning and 34.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1101.42 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.1 MB in the beginning and 43.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 87451.74 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.6 MB in the beginning and 27.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.82 ms. Allocated memory is still 81.8 MB. Free memory is still 27.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={1:0}] [L1007] list->prev = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={1:0}, list={1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1041] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: 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 5 procedures, 150 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 87366.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 18.6ms, AutomataDifference: 57924.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 744 SDtfs, 1402 SDslu, 1622 SDs, 0 SdLazy, 2683 SolverSat, 185 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12964.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 205 SyntacticMatches, 8 SemanticMatches, 99 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 64754.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 140.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 252 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 99.5ms SsaConstructionTime, 430.0ms SatisfiabilityAnalysisTime, 25045.1ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 254 ConstructedInterpolants, 22 QuantifiedInterpolants, 2250 SizeOfPredicates, 47 NumberOfNonLiveVariables, 900 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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 [2021-10-21 20:11:34,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_144ca5ca-49dc-4e8b-8f74-db2e312ae705/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...