./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/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_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/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_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b2eff8b [2021-10-28 23:09:22,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:09:22,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:09:22,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:09:22,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:09:22,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:09:22,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:09:22,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:09:22,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:09:22,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:09:22,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:09:22,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:09:22,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:09:22,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:09:22,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:09:22,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:09:22,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:09:22,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:09:22,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:09:22,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:09:22,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:09:22,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:09:22,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:09:22,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:09:22,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:09:22,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:09:22,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:09:22,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:09:22,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:09:22,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:09:22,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:09:22,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:09:22,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:09:22,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:09:22,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:09:22,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:09:22,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:09:22,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:09:22,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:09:22,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:09:22,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:09:22,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:09:23,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:09:23,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:09:23,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:09:23,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:09:23,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:09:23,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:09:23,022 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:09:23,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:09:23,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:09:23,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:09:23,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:09:23,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:09:23,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:09:23,026 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:09:23,027 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:09:23,027 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:09:23,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:09:23,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:09:23,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:09:23,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:09:23,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:09:23,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:09:23,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:09:23,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:23,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:09:23,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:09:23,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:09:23,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:09:23,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:09:23,034 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_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-28 23:09:23,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:09:23,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:09:23,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:09:23,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:09:23,413 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:09:23,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 23:09:23,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/2192d405f/0ae8ede633c24664b08040e9d8dc2359/FLAG7b5b6f39b [2021-10-28 23:09:24,220 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:09:24,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 23:09:24,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/2192d405f/0ae8ede633c24664b08040e9d8dc2359/FLAG7b5b6f39b [2021-10-28 23:09:24,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/2192d405f/0ae8ede633c24664b08040e9d8dc2359 [2021-10-28 23:09:24,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:09:24,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:09:24,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:24,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:09:24,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:09:24,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:24" (1/1) ... [2021-10-28 23:09:24,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cad234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:24, skipping insertion in model container [2021-10-28 23:09:24,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:24" (1/1) ... [2021-10-28 23:09:24,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:09:24,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:09:24,945 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 23:09:24,949 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 23:09:24,952 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 23:09:24,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:24,969 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:09:25,040 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 23:09:25,047 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 23:09:25,050 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 23:09:25,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:25,099 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:09:25,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25 WrapperNode [2021-10-28 23:09:25,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:25,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:09:25,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:09:25,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:09:25,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:09:25,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:09:25,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:09:25,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:09:25,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (1/1) ... [2021-10-28 23:09:25,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:09:25,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:09:25,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:09:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:09:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:09:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:09:25,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:09:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:09:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:09:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:09:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:09:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:09:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:09:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:09:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:09:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:09:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:09:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:09:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:09:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:09:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:09:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:09:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:09:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:09:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:09:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:09:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:09:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:09:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:09:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:09:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:09:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:09:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:09:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:09:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:09:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:09:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:09:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:09:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:09:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:09:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:09:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:09:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:09:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:09:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:09:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:09:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:09:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:09:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:09:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:09:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:09:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:09:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:09:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:09:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:09:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:09:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:09:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:09:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:09:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:09:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:09:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:09:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:09:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:09:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:09:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:09:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:09:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:09:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:09:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:09:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:09:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:09:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:09:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:09:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:09:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:09:26,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:09:26,185 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:09:26,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:26 BoogieIcfgContainer [2021-10-28 23:09:26,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:09:26,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:09:26,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:09:26,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:09:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:09:24" (1/3) ... [2021-10-28 23:09:26,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15880f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:26, skipping insertion in model container [2021-10-28 23:09:26,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:25" (2/3) ... [2021-10-28 23:09:26,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15880f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:26, skipping insertion in model container [2021-10-28 23:09:26,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:26" (3/3) ... [2021-10-28 23:09:26,201 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-28 23:09:26,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:09:26,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-28 23:09:26,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:09:26,290 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:09:26,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-28 23:09:26,320 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) [2021-10-28 23:09:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:09:26,332 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:26,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:26,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:26,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240052, now seen corresponding path program 1 times [2021-10-28 23:09:26,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:26,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686408811] [2021-10-28 23:09:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:26,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:26,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:26,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686408811] [2021-10-28 23:09:26,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686408811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:26,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:26,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:09:26,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419072368] [2021-10-28 23:09:26,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:09:26,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:09:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:26,823 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) [2021-10-28 23:09:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:27,358 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-10-28 23:09:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:09:27,360 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 [2021-10-28 23:09:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:27,379 INFO L225 Difference]: With dead ends: 143 [2021-10-28 23:09:27,379 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 23:09:27,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 23:09:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-10-28 23:09:27,455 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) [2021-10-28 23:09:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-10-28 23:09:27,459 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 7 [2021-10-28 23:09:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:27,460 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-10-28 23:09:27,460 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) [2021-10-28 23:09:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-10-28 23:09:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:09:27,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:27,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:27,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:09:27,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:27,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1707240051, now seen corresponding path program 1 times [2021-10-28 23:09:27,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:27,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287841397] [2021-10-28 23:09:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:27,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:27,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:27,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287841397] [2021-10-28 23:09:27,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287841397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:27,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:27,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:09:27,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376439708] [2021-10-28 23:09:27,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:09:27,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:09:27,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:27,616 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) [2021-10-28 23:09:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:28,012 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-10-28 23:09:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:09:28,013 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 [2021-10-28 23:09:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:28,015 INFO L225 Difference]: With dead ends: 152 [2021-10-28 23:09:28,015 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 23:09:28,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 23:09:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2021-10-28 23:09:28,026 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) [2021-10-28 23:09:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2021-10-28 23:09:28,030 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 7 [2021-10-28 23:09:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:28,030 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2021-10-28 23:09:28,031 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) [2021-10-28 23:09:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2021-10-28 23:09:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:09:28,033 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:28,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:28,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:09:28,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash 152402486, now seen corresponding path program 1 times [2021-10-28 23:09:28,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:28,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005030568] [2021-10-28 23:09:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:28,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:28,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:28,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005030568] [2021-10-28 23:09:28,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005030568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:28,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:28,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:09:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954728865] [2021-10-28 23:09:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:09:28,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:09:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:09:28,313 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) [2021-10-28 23:09:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:28,787 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2021-10-28 23:09:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:09:28,788 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 [2021-10-28 23:09:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:28,793 INFO L225 Difference]: With dead ends: 192 [2021-10-28 23:09:28,793 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 23:09:28,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:09:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 23:09:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2021-10-28 23:09:28,820 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) [2021-10-28 23:09:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-10-28 23:09:28,827 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 13 [2021-10-28 23:09:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:28,828 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-10-28 23:09:28,829 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) [2021-10-28 23:09:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-10-28 23:09:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:09:28,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:28,830 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:28,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:09:28,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash 152402485, now seen corresponding path program 1 times [2021-10-28 23:09:28,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:28,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304420927] [2021-10-28 23:09:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:28,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:28,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:28,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304420927] [2021-10-28 23:09:28,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304420927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:28,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:28,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:09:28,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808290777] [2021-10-28 23:09:28,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:09:28,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:09:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:09:28,948 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) [2021-10-28 23:09:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:29,290 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-10-28 23:09:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:09:29,291 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 [2021-10-28 23:09:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:29,292 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:09:29,292 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:09:29,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:09:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:09:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-10-28 23:09:29,303 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) [2021-10-28 23:09:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2021-10-28 23:09:29,305 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 13 [2021-10-28 23:09:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:29,306 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2021-10-28 23:09:29,306 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) [2021-10-28 23:09:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2021-10-28 23:09:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:09:29,307 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:29,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:29,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:09:29,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 429896239, now seen corresponding path program 1 times [2021-10-28 23:09:29,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:29,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931547707] [2021-10-28 23:09:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:29,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:29,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:29,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931547707] [2021-10-28 23:09:29,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931547707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:29,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:29,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:09:29,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180974542] [2021-10-28 23:09:29,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:09:29,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:09:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:09:29,423 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) [2021-10-28 23:09:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:29,724 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-10-28 23:09:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:09:29,725 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 [2021-10-28 23:09:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:29,726 INFO L225 Difference]: With dead ends: 158 [2021-10-28 23:09:29,726 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:09:29,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:09:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:09:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2021-10-28 23:09:29,736 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) [2021-10-28 23:09:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2021-10-28 23:09:29,747 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2021-10-28 23:09:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:29,748 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2021-10-28 23:09:29,748 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) [2021-10-28 23:09:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2021-10-28 23:09:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:09:29,749 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:29,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:29,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:09:29,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash 442001777, now seen corresponding path program 1 times [2021-10-28 23:09:29,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:29,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942196680] [2021-10-28 23:09:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:29,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:29,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:29,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942196680] [2021-10-28 23:09:29,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942196680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:29,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:29,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:09:29,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659260776] [2021-10-28 23:09:29,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:09:29,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:09:29,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:09:29,904 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) [2021-10-28 23:09:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:30,261 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-10-28 23:09:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:09:30,262 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 [2021-10-28 23:09:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:30,264 INFO L225 Difference]: With dead ends: 139 [2021-10-28 23:09:30,265 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 23:09:30,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:09:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 23:09:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-28 23:09:30,284 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) [2021-10-28 23:09:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-10-28 23:09:30,287 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 16 [2021-10-28 23:09:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:30,288 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-10-28 23:09:30,290 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) [2021-10-28 23:09:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-10-28 23:09:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:09:30,292 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:30,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:09:30,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 442001778, now seen corresponding path program 1 times [2021-10-28 23:09:30,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:30,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509240199] [2021-10-28 23:09:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:30,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:30,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:30,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509240199] [2021-10-28 23:09:30,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509240199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:30,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:30,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:09:30,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739637211] [2021-10-28 23:09:30,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:09:30,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:09:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:09:30,493 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) [2021-10-28 23:09:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:30,892 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-10-28 23:09:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:09:30,893 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 [2021-10-28 23:09:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:30,895 INFO L225 Difference]: With dead ends: 138 [2021-10-28 23:09:30,895 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 23:09:30,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:09:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 23:09:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-10-28 23:09:30,914 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) [2021-10-28 23:09:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-10-28 23:09:30,924 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 16 [2021-10-28 23:09:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:30,925 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-10-28 23:09:30,925 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) [2021-10-28 23:09:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-10-28 23:09:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:09:30,927 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:30,927 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:30,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:09:30,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -549611590, now seen corresponding path program 1 times [2021-10-28 23:09:30,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:30,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505656250] [2021-10-28 23:09:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:30,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:31,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:31,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505656250] [2021-10-28 23:09:31,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505656250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:31,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:31,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:09:31,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775650861] [2021-10-28 23:09:31,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:09:31,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:09:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:09:31,055 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) [2021-10-28 23:09:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:31,454 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2021-10-28 23:09:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:09:31,455 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 [2021-10-28 23:09:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:31,457 INFO L225 Difference]: With dead ends: 198 [2021-10-28 23:09:31,457 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 23:09:31,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:09:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 23:09:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2021-10-28 23:09:31,464 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) [2021-10-28 23:09:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-10-28 23:09:31,465 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2021-10-28 23:09:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:31,466 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-10-28 23:09:31,466 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) [2021-10-28 23:09:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-10-28 23:09:31,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:09:31,467 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:31,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:31,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:09:31,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash -63373389, now seen corresponding path program 1 times [2021-10-28 23:09:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:31,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235811260] [2021-10-28 23:09:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:31,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:31,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:31,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235811260] [2021-10-28 23:09:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235811260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:31,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:31,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:09:31,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437988697] [2021-10-28 23:09:31,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:09:31,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:09:31,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:09:31,660 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) [2021-10-28 23:09:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:32,181 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-10-28 23:09:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:09:32,182 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 [2021-10-28 23:09:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:32,183 INFO L225 Difference]: With dead ends: 143 [2021-10-28 23:09:32,183 INFO L226 Difference]: Without dead ends: 143 [2021-10-28 23:09:32,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:09:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-28 23:09:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-10-28 23:09:32,188 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) [2021-10-28 23:09:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-10-28 23:09:32,190 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2021-10-28 23:09:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:32,190 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-10-28 23:09:32,191 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) [2021-10-28 23:09:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-10-28 23:09:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:09:32,192 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:32,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:32,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:09:32,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -63373388, now seen corresponding path program 1 times [2021-10-28 23:09:32,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:32,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677306200] [2021-10-28 23:09:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:32,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:09:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:32,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:09:32,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677306200] [2021-10-28 23:09:32,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677306200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:32,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:32,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:09:32,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697926003] [2021-10-28 23:09:32,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:09:32,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:09:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:09:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:09:32,432 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) [2021-10-28 23:09:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:33,357 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-10-28 23:09:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:09:33,358 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 [2021-10-28 23:09:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:33,359 INFO L225 Difference]: With dead ends: 147 [2021-10-28 23:09:33,360 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 23:09:33,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:09:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 23:09:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-10-28 23:09:33,365 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) [2021-10-28 23:09:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-10-28 23:09:33,367 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 20 [2021-10-28 23:09:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:33,368 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-10-28 23:09:33,368 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) [2021-10-28 23:09:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-10-28 23:09:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:09:33,370 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:33,370 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:09:33,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash -195087453, now seen corresponding path program 1 times [2021-10-28 23:09:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:09:33,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334678149] [2021-10-28 23:09:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:33,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:09:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:09:33,388 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:09:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:09:33,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:09:33,435 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:09:33,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:09:33,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:09:33,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:09:33,439 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:09:33,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:09:33,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:09:33,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:09:33,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:09:33,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:09:33,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:09:33,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:09:33,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:09:33,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:09:33,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:09:33,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:09:33,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:09:33,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:09:33,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:09:33,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:09:33,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:09:33,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:09:33,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:09:33,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:09:33,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:09:33,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:09:33,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:09:33,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:09:33,445 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:09:33,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:09:33,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:09:33,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:09:33,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:09:33,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:09:33,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:09:33,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:09:33,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 23:09:33,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:09:33,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:09:33,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:09:33,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:09:33,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:09:33,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 23:09:33,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 23:09:33,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 23:09:33,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-28 23:09:33,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 23:09:33,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 23:09:33,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 23:09:33,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-28 23:09:33,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:09:33,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:09:33,451 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 23:09:33,452 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 23:09:33,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,453 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 23:09:33,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 23:09:33,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:09:33,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:09:33,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:09:33,459 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:33,464 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:09:33,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:09:33 BoogieIcfgContainer [2021-10-28 23:09:33,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:09:33,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:09:33,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:09:33,501 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:09:33,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:26" (3/4) ... [2021-10-28 23:09:33,506 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:09:33,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:09:33,509 INFO L168 Benchmark]: Toolchain (without parser) took 9094.32 ms. Allocated memory was 134.2 MB in the beginning and 169.9 MB in the end (delta: 35.7 MB). Free memory was 97.8 MB in the beginning and 53.4 MB in the end (delta: 44.4 MB). Peak memory consumption was 78.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:33,509 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:09:33,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.07 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 101.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:33,514 INFO L168 Benchmark]: Boogie Preprocessor took 79.67 ms. Allocated memory is still 134.2 MB. Free memory was 101.4 MB in the beginning and 98.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:33,514 INFO L168 Benchmark]: RCFGBuilder took 1006.54 ms. Allocated memory is still 134.2 MB. Free memory was 98.0 MB in the beginning and 72.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:33,515 INFO L168 Benchmark]: TraceAbstraction took 7308.76 ms. Allocated memory was 134.2 MB in the beginning and 169.9 MB in the end (delta: 35.7 MB). Free memory was 71.5 MB in the beginning and 53.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:09:33,515 INFO L168 Benchmark]: Witness Printer took 6.24 ms. Allocated memory is still 169.9 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:09:33,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 685.07 ms. Allocated memory is still 134.2 MB. Free memory was 97.8 MB in the beginning and 101.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.67 ms. Allocated memory is still 134.2 MB. Free memory was 101.4 MB in the beginning and 98.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1006.54 ms. Allocated memory is still 134.2 MB. Free memory was 98.0 MB in the beginning and 72.0 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7308.76 ms. Allocated memory was 134.2 MB in the beginning and 169.9 MB in the end (delta: 35.7 MB). Free memory was 71.5 MB in the beginning and 53.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.24 ms. Allocated memory is still 169.9 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 7.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 767 SDtfs, 1265 SDslu, 1106 SDs, 0 SdLazy, 3165 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 152 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s 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 [2021-10-28 23:09:33,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:09:36,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:09:36,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:09:36,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:09:36,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:09:36,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:09:36,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:09:36,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:09:36,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:09:36,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:09:36,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:09:36,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:09:36,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:09:36,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:09:36,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:09:36,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:09:36,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:09:36,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:09:36,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:09:36,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:09:36,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:09:36,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:09:36,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:09:36,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:09:36,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:09:36,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:09:36,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:09:36,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:09:36,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:09:36,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:09:36,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:09:36,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:09:36,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:09:37,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:09:37,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:09:37,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:09:37,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:09:37,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:09:37,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:09:37,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:09:37,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:09:37,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:09:37,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:09:37,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:09:37,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:09:37,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:09:37,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:09:37,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:09:37,048 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:09:37,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:09:37,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:09:37,049 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:09:37,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:09:37,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:09:37,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:09:37,050 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:09:37,050 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:09:37,050 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:09:37,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:09:37,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:09:37,051 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:09:37,051 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:09:37,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:09:37,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:09:37,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:09:37,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:09:37,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:09:37,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:37,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:09:37,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:09:37,059 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:09:37,060 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:09:37,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:09:37,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:09:37,061 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_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-28 23:09:37,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:09:37,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:09:37,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:09:37,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:09:37,686 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:09:37,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 23:09:37,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/da8ff9699/89eeec830a2e41c2965c82048f42aa88/FLAG50d870705 [2021-10-28 23:09:38,783 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:09:38,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-28 23:09:38,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/da8ff9699/89eeec830a2e41c2965c82048f42aa88/FLAG50d870705 [2021-10-28 23:09:39,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/data/da8ff9699/89eeec830a2e41c2965c82048f42aa88 [2021-10-28 23:09:39,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:09:39,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:09:39,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:39,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:09:39,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:09:39,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bda6431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39, skipping insertion in model container [2021-10-28 23:09:39,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:09:39,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:09:39,646 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 23:09:39,656 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 23:09:39,662 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 23:09:39,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:39,720 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:09:39,815 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-28 23:09:39,820 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-28 23:09:39,825 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_893ae588-3361-43d4-94cf-6e1c492c99f6/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-28 23:09:39,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:09:39,902 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:09:39,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39 WrapperNode [2021-10-28 23:09:39,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:09:39,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:09:39,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:09:39,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:09:39,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:39,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:40,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:40,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:40,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:09:40,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:09:40,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:09:40,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:09:40,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (1/1) ... [2021-10-28 23:09:40,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:09:40,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:09:40,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:09:40,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:09:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:09:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:09:40,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:09:40,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:09:40,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:09:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:09:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:09:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:09:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:09:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:09:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:09:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:09:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:09:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:09:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:09:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:09:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:09:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:09:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:09:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:09:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:09:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:09:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:09:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:09:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:09:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:09:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:09:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:09:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:09:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:09:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:09:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:09:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:09:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:09:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:09:40,199 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:09:40,199 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:09:40,199 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:09:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:09:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:09:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:09:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:09:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:09:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:09:40,211 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:09:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:09:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:09:40,213 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:09:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:09:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:09:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:09:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:09:40,214 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:09:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:09:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:09:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:09:40,215 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:09:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:09:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:09:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:09:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:09:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:09:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:09:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:09:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:09:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:09:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:09:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:09:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:09:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:09:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:09:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:09:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:09:40,233 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:09:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:09:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:09:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:09:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:09:40,234 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:09:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:09:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:09:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:09:40,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:09:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:09:40,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:09:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:09:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:09:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:09:40,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:09:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:09:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:09:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:09:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:09:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:09:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:09:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:09:41,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:09:41,565 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:09:41,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41 BoogieIcfgContainer [2021-10-28 23:09:41,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:09:41,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:09:41,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:09:41,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:09:41,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:09:39" (1/3) ... [2021-10-28 23:09:41,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2f8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:41, skipping insertion in model container [2021-10-28 23:09:41,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:39" (2/3) ... [2021-10-28 23:09:41,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2f8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:41, skipping insertion in model container [2021-10-28 23:09:41,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41" (3/3) ... [2021-10-28 23:09:41,618 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-28 23:09:41,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:09:41,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-10-28 23:09:41,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:09:41,717 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:09:41,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-10-28 23:09:41,746 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) [2021-10-28 23:09:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:09:41,783 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:41,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:41,784 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -486261088, now seen corresponding path program 1 times [2021-10-28 23:09:41,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:09:41,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800900674] [2021-10-28 23:09:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:41,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:09:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:09:41,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:09:41,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:09:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:42,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:09:42,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:42,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:09:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:42,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:09:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:42,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:09:42,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800900674] [2021-10-28 23:09:42,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800900674] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:42,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:42,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:09:42,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94816861] [2021-10-28 23:09:42,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:09:42,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:09:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:09:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:09:42,273 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) [2021-10-28 23:09:42,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:42,775 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-10-28 23:09:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:09:42,777 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 [2021-10-28 23:09:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:42,793 INFO L225 Difference]: With dead ends: 141 [2021-10-28 23:09:42,793 INFO L226 Difference]: Without dead ends: 137 [2021-10-28 23:09:42,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:09:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-28 23:09:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-10-28 23:09:42,867 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) [2021-10-28 23:09:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-10-28 23:09:42,886 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 7 [2021-10-28 23:09:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:42,887 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-10-28 23:09:42,888 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) [2021-10-28 23:09:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-10-28 23:09:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:09:42,889 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:42,889 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:42,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 23:09:43,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:09:43,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -486261087, now seen corresponding path program 1 times [2021-10-28 23:09:43,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:09:43,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364682709] [2021-10-28 23:09:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:43,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:09:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:09:43,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:09:43,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:09:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:09:43,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:43,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:09:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:43,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:09:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:43,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:09:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364682709] [2021-10-28 23:09:43,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364682709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:43,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:09:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501160230] [2021-10-28 23:09:43,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:09:43,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:09:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:09:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:43,504 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) [2021-10-28 23:09:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:44,103 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-28 23:09:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:09:44,105 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 [2021-10-28 23:09:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:44,107 INFO L225 Difference]: With dead ends: 150 [2021-10-28 23:09:44,107 INFO L226 Difference]: Without dead ends: 150 [2021-10-28 23:09:44,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-28 23:09:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2021-10-28 23:09:44,130 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) [2021-10-28 23:09:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2021-10-28 23:09:44,134 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 7 [2021-10-28 23:09:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:44,135 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2021-10-28 23:09:44,136 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) [2021-10-28 23:09:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2021-10-28 23:09:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:09:44,137 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:44,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:44,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:09:44,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:09:44,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877289, now seen corresponding path program 1 times [2021-10-28 23:09:44,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:09:44,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826451966] [2021-10-28 23:09:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:44,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:09:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:09:44,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:09:44,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:09:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:09:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:44,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:09:44,701 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:09:44,702 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 [2021-10-28 23:09:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:44,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:09:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:44,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:09:44,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826451966] [2021-10-28 23:09:44,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826451966] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:44,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:44,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:09:44,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770511545] [2021-10-28 23:09:44,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:09:44,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:09:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:09:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:09:44,871 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) [2021-10-28 23:09:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:09:45,503 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 23:09:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:09:45,505 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 [2021-10-28 23:09:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:09:45,507 INFO L225 Difference]: With dead ends: 142 [2021-10-28 23:09:45,507 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 23:09:45,507 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:09:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 23:09:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-10-28 23:09:45,529 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) [2021-10-28 23:09:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-10-28 23:09:45,533 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 12 [2021-10-28 23:09:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:09:45,534 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-10-28 23:09:45,534 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) [2021-10-28 23:09:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-10-28 23:09:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:09:45,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:09:45,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:09:45,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:09:45,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:09:45,751 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:09:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:09:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1027877290, now seen corresponding path program 1 times [2021-10-28 23:09:45,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:09:45,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729001689] [2021-10-28 23:09:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:09:45,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:09:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:09:45,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:09:45,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:09:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:09:45,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:09:45,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:09:46,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:09:46,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:09:46,276 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:09:46,277 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 [2021-10-28 23:09:46,294 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:09:46,295 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 [2021-10-28 23:09:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:46,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:09:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:09:49,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:09:49,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729001689] [2021-10-28 23:09:49,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729001689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:09:49,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:09:49,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:09:49,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224689000] [2021-10-28 23:09:49,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:09:49,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:09:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:09:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-28 23:09:49,551 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) [2021-10-28 23:10:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:11,390 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-10-28 23:10:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:10:11,392 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 [2021-10-28 23:10:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:11,394 INFO L225 Difference]: With dead ends: 177 [2021-10-28 23:10:11,395 INFO L226 Difference]: Without dead ends: 177 [2021-10-28 23:10:11,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=68, Invalid=112, Unknown=2, NotChecked=0, Total=182 [2021-10-28 23:10:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-28 23:10:11,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 122. [2021-10-28 23:10:11,406 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) [2021-10-28 23:10:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-10-28 23:10:11,408 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 12 [2021-10-28 23:10:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:11,409 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-10-28 23:10:11,409 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) [2021-10-28 23:10:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-10-28 23:10:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:10:11,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:11,411 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:11,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:11,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:11,625 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash -52407454, now seen corresponding path program 1 times [2021-10-28 23:10:11,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:11,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575865539] [2021-10-28 23:10:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:11,632 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:11,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:11,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:11,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:10:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:11,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:10:11,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:11,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:12,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:12,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575865539] [2021-10-28 23:10:12,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575865539] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:12,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:12,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:10:12,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812143573] [2021-10-28 23:10:12,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:12,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:12,017 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) [2021-10-28 23:10:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:12,529 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-10-28 23:10:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:12,530 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 [2021-10-28 23:10:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:12,532 INFO L225 Difference]: With dead ends: 148 [2021-10-28 23:10:12,532 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 23:10:12,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 23:10:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2021-10-28 23:10:12,541 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) [2021-10-28 23:10:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-10-28 23:10:12,542 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 14 [2021-10-28 23:10:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:12,543 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-10-28 23:10:12,543 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) [2021-10-28 23:10:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-10-28 23:10:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:10:12,544 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:12,545 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:12,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:12,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:12,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480014, now seen corresponding path program 1 times [2021-10-28 23:10:12,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:12,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560675893] [2021-10-28 23:10:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:12,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:12,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:12,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:10:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:12,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:10:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:13,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:13,041 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 [2021-10-28 23:10:13,124 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 [2021-10-28 23:10:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:13,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:13,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:13,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560675893] [2021-10-28 23:10:13,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560675893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:13,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:13,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:10:13,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562746548] [2021-10-28 23:10:13,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:13,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:13,264 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) [2021-10-28 23:10:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:14,157 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 23:10:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:14,159 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 [2021-10-28 23:10:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:14,160 INFO L225 Difference]: With dead ends: 119 [2021-10-28 23:10:14,161 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 23:10:14,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 23:10:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-28 23:10:14,170 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) [2021-10-28 23:10:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-10-28 23:10:14,172 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 15 [2021-10-28 23:10:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:14,173 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-10-28 23:10:14,173 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) [2021-10-28 23:10:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-10-28 23:10:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:10:14,174 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:14,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:14,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:14,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:14,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1624480013, now seen corresponding path program 1 times [2021-10-28 23:10:14,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:14,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282926125] [2021-10-28 23:10:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:14,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:14,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:14,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:10:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:14,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:14,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:14,730 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 [2021-10-28 23:10:14,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:14,836 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 [2021-10-28 23:10:14,854 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 [2021-10-28 23:10:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:14,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:15,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:15,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282926125] [2021-10-28 23:10:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282926125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:15,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:15,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:10:15,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484656799] [2021-10-28 23:10:15,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:15,332 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) [2021-10-28 23:10:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:17,710 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-10-28 23:10:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:17,711 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 [2021-10-28 23:10:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:17,712 INFO L225 Difference]: With dead ends: 118 [2021-10-28 23:10:17,712 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 23:10:17,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 23:10:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-28 23:10:17,719 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) [2021-10-28 23:10:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2021-10-28 23:10:17,721 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 15 [2021-10-28 23:10:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:17,722 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2021-10-28 23:10:17,722 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) [2021-10-28 23:10:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2021-10-28 23:10:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:10:17,723 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:17,724 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:17,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:17,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:17,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2101662523, now seen corresponding path program 1 times [2021-10-28 23:10:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:17,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440313432] [2021-10-28 23:10:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:17,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:17,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:17,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:10:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:18,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:10:18,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:18,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:10:18,289 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 [2021-10-28 23:10:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:18,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:18,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:18,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440313432] [2021-10-28 23:10:18,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440313432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:18,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:18,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:10:18,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086749774] [2021-10-28 23:10:18,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:18,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:18,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:18,436 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) [2021-10-28 23:10:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:19,240 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-10-28 23:10:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:19,241 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 [2021-10-28 23:10:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:19,243 INFO L225 Difference]: With dead ends: 179 [2021-10-28 23:10:19,243 INFO L226 Difference]: Without dead ends: 179 [2021-10-28 23:10:19,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-28 23:10:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 124. [2021-10-28 23:10:19,250 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) [2021-10-28 23:10:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-10-28 23:10:19,253 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 17 [2021-10-28 23:10:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:19,253 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-10-28 23:10:19,254 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) [2021-10-28 23:10:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-10-28 23:10:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:10:19,255 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:19,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:19,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:19,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:19,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:19,469 INFO L85 PathProgramCache]: Analyzing trace with hash -739626508, now seen corresponding path program 1 times [2021-10-28 23:10:19,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:19,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23940203] [2021-10-28 23:10:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:19,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:19,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:10:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:10:19,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:19,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:19,922 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 23:10:19,923 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 [2021-10-28 23:10:20,038 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 [2021-10-28 23:10:20,424 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:10:20,425 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 [2021-10-28 23:10:20,705 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:20,706 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 [2021-10-28 23:10:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:20,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:29,181 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 [2021-10-28 23:10:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:29,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:29,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23940203] [2021-10-28 23:10:29,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23940203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:29,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:29,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2021-10-28 23:10:29,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479486923] [2021-10-28 23:10:29,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:10:29,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:10:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=4, NotChecked=24, Total=210 [2021-10-28 23:10:29,346 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) [2021-10-28 23:10:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:32,248 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-10-28 23:10:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:32,249 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 [2021-10-28 23:10:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:32,250 INFO L225 Difference]: With dead ends: 145 [2021-10-28 23:10:32,250 INFO L226 Difference]: Without dead ends: 145 [2021-10-28 23:10:32,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=4, NotChecked=42, Total=552 [2021-10-28 23:10:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-28 23:10:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-10-28 23:10:32,256 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) [2021-10-28 23:10:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-10-28 23:10:32,257 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 19 [2021-10-28 23:10:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-10-28 23:10:32,258 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) [2021-10-28 23:10:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-10-28 23:10:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:10:32,259 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:32,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:32,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-28 23:10:32,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:32,465 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:10:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash -739626507, now seen corresponding path program 1 times [2021-10-28 23:10:32,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:32,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292786700] [2021-10-28 23:10:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:32,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:32,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:32,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:10:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:32,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:10:32,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:32,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:32,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:32,906 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:10:32,907 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 [2021-10-28 23:10:32,978 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 [2021-10-28 23:10:33,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:33,267 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:10:33,267 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 [2021-10-28 23:10:33,309 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 23:10:33,310 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 [2021-10-28 23:10:33,533 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:33,534 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 [2021-10-28 23:10:33,554 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:33,555 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 [2021-10-28 23:10:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:33,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:54,495 WARN L207 SmtUtils]: Spent 7.26 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-28 23:10:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:55,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:55,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292786700] [2021-10-28 23:10:55,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292786700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:55,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:55,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 23:10:55,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490193477] [2021-10-28 23:10:55,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:10:55,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:10:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=194, Unknown=3, NotChecked=0, Total=240 [2021-10-28 23:10:55,446 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) [2021-10-28 23:11:10,326 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)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 23:11:20,212 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 [2021-10-28 23:11:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:11:38,139 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2021-10-28 23:11:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-28 23:11:38,140 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 [2021-10-28 23:11:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:11:38,141 INFO L225 Difference]: With dead ends: 218 [2021-10-28 23:11:38,142 INFO L226 Difference]: Without dead ends: 218 [2021-10-28 23:11:38,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=503, Invalid=1750, Unknown=11, NotChecked=186, Total=2450 [2021-10-28 23:11:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-28 23:11:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 120. [2021-10-28 23:11:38,150 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) [2021-10-28 23:11:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2021-10-28 23:11:38,151 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 19 [2021-10-28 23:11:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:11:38,151 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2021-10-28 23:11:38,152 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) [2021-10-28 23:11:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2021-10-28 23:11:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:11:38,154 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:11:38,154 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:38,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:38,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:11:38,357 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-10-28 23:11:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:11:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1944702492, now seen corresponding path program 1 times [2021-10-28 23:11:38,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:11:38,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660422276] [2021-10-28 23:11:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:11:38,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:11:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:11:38,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:11:38,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 23:11:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:38,703 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:11:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:11:38,836 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:11:38,837 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:11:38,838 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:11:38,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:11:38,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:11:38,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:11:38,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:11:38,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:11:38,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:11:38,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:11:38,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:11:38,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:11:38,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:11:38,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:11:38,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:11:38,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:11:38,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:11:38,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:11:38,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:11:38,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:11:38,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:11:38,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:11:38,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:11:38,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:11:38,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:11:38,848 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:11:38,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:11:38,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:11:38,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:11:38,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:11:38,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:11:38,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:11:38,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:11:38,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:11:38,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:11:38,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:11:38,851 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:11:38,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 23:11:38,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:11:38,852 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:11:38,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:11:38,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:11:38,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:11:38,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-10-28 23:11:38,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 23:11:38,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 23:11:38,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-10-28 23:11:38,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-10-28 23:11:38,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 23:11:38,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 23:11:38,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-10-28 23:11:38,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:11:38,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:11:38,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 23:11:38,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 23:11:38,858 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 23:11:38,859 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 23:11:38,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:11:38,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:11:38,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:11:39,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:11:39,090 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:11:39,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:11:39,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:11:39 BoogieIcfgContainer [2021-10-28 23:11:39,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:11:39,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:11:39,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:11:39,155 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:11:39,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:41" (3/4) ... [2021-10-28 23:11:39,160 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:11:39,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:11:39,162 INFO L168 Benchmark]: Toolchain (without parser) took 120133.94 ms. Allocated memory was 62.9 MB in the beginning and 100.7 MB in the end (delta: 37.7 MB). Free memory was 42.1 MB in the beginning and 76.6 MB in the end (delta: -34.5 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:39,163 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:11:39,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 874.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:39,164 INFO L168 Benchmark]: Boogie Preprocessor took 139.53 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 35.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:39,171 INFO L168 Benchmark]: RCFGBuilder took 1531.48 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 41.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:39,172 INFO L168 Benchmark]: TraceAbstraction took 117543.79 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 62.0 MB in the beginning and 76.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:11:39,172 INFO L168 Benchmark]: Witness Printer took 6.32 ms. Allocated memory is still 100.7 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:11:39,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 874.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.53 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 35.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1531.48 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 41.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 117543.79 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 62.0 MB in the beginning and 76.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.32 ms. Allocated memory is still 100.7 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 117.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 73.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 741 SDtfs, 1474 SDslu, 1610 SDs, 0 SdLazy, 2696 SolverSat, 198 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 17.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 205 SyntacticMatches, 8 SemanticMatches, 110 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 86.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 290 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 38.0s 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 [2021-10-28 23:11:39,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_893ae588-3361-43d4-94cf-6e1c492c99f6/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...