./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa --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 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:12:40,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:12:40,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:12:40,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:12:40,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:12:40,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:12:40,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:12:40,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:12:40,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:12:40,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:12:40,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:12:40,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:12:40,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:12:40,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:12:40,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:12:40,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:12:40,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:12:40,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:12:40,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:12:40,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:12:40,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:12:40,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:12:40,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:12:40,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:12:40,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:12:40,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:12:40,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:12:40,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:12:40,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:12:40,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:12:40,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:12:40,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:12:40,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:12:40,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:12:40,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:12:40,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:12:40,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:12:40,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:12:40,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:12:40,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:12:40,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:12:40,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 19:12:41,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:12:41,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:12:41,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:12:41,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:12:41,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:12:41,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:12:41,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:12:41,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:12:41,013 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:12:41,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:12:41,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:12:41,014 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:12:41,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:12:41,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:12:41,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:12:41,015 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:12:41,015 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:12:41,019 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 19:12:41,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:12:41,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:12:41,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:12:41,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:12:41,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:12:41,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:12:41,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:12:41,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:12:41,021 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_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2021-12-06 19:12:41,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:12:41,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:12:41,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:12:41,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:12:41,242 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:12:41,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-12-06 19:12:41,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/data/3c297b7db/c1102a49d38e444db53fa4ed96aa4785/FLAG71f8568a0 [2021-12-06 19:12:41,698 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:12:41,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-12-06 19:12:41,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/data/3c297b7db/c1102a49d38e444db53fa4ed96aa4785/FLAG71f8568a0 [2021-12-06 19:12:41,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/data/3c297b7db/c1102a49d38e444db53fa4ed96aa4785 [2021-12-06 19:12:41,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:12:41,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:12:41,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:12:41,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:12:41,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:12:41,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:12:41" (1/1) ... [2021-12-06 19:12:41,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13eef788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:41, skipping insertion in model container [2021-12-06 19:12:41,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:12:41" (1/1) ... [2021-12-06 19:12:41,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:12:41,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:12:41,934 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-12-06 19:12:41,937 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-12-06 19:12:41,940 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-12-06 19:12:41,941 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-12-06 19:12:41,942 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-12-06 19:12:41,943 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-12-06 19:12:41,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:12:41,952 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:12:41,978 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-12-06 19:12:41,980 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-12-06 19:12:41,983 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-12-06 19:12:41,983 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-12-06 19:12:41,984 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-12-06 19:12:41,985 WARN L230 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_e4699635-deef-4594-8c10-1a226e0630e8/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-12-06 19:12:41,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:12:42,007 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:12:42,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42 WrapperNode [2021-12-06 19:12:42,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:12:42,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:12:42,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:12:42,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:12:42,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,055 INFO L137 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 197 [2021-12-06 19:12:42,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:12:42,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:12:42,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:12:42,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:12:42,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:12:42,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:12:42,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:12:42,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:12:42,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (1/1) ... [2021-12-06 19:12:42,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:12:42,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:42,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:12:42,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:12:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:12:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:12:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:12:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:12:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:12:42,235 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:12:42,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:12:42,544 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:12:42,552 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:12:42,552 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-06 19:12:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:12:42 BoogieIcfgContainer [2021-12-06 19:12:42,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:12:42,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:12:42,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:12:42,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:12:42,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:12:41" (1/3) ... [2021-12-06 19:12:42,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a908b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:12:42, skipping insertion in model container [2021-12-06 19:12:42,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:12:42" (2/3) ... [2021-12-06 19:12:42,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a908b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:12:42, skipping insertion in model container [2021-12-06 19:12:42,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:12:42" (3/3) ... [2021-12-06 19:12:42,562 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2021-12-06 19:12:42,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:12:42,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2021-12-06 19:12:42,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:12:42,618 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 [2021-12-06 19:12:42,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2021-12-06 19:12:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 19:12:42,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:42,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 19:12:42,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-06 19:12:42,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:42,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831399902] [2021-12-06 19:12:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:42,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:42,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:42,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:42,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831399902] [2021-12-06 19:12:42,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831399902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:42,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:42,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:12:42,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511144450] [2021-12-06 19:12:42,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:42,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:42,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:42,792 INFO L87 Difference]: Start difference. First operand has 179 states, 98 states have (on average 2.183673469387755) internal successors, (214), 178 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:42,908 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2021-12-06 19:12:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:42,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 19:12:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:42,920 INFO L225 Difference]: With dead ends: 182 [2021-12-06 19:12:42,920 INFO L226 Difference]: Without dead ends: 178 [2021-12-06 19:12:42,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:42,925 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 172 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:42,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 118 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-06 19:12:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2021-12-06 19:12:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.907216494845361) internal successors, (185), 173 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 185 transitions. [2021-12-06 19:12:42,964 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 185 transitions. Word has length 3 [2021-12-06 19:12:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:42,965 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 185 transitions. [2021-12-06 19:12:42,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 185 transitions. [2021-12-06 19:12:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 19:12:42,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:42,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 19:12:42,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:12:42,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-06 19:12:42,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:42,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727918986] [2021-12-06 19:12:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:42,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727918986] [2021-12-06 19:12:43,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727918986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:12:43,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773748957] [2021-12-06 19:12:43,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:43,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:43,004 INFO L87 Difference]: Start difference. First operand 174 states and 185 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,085 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2021-12-06 19:12:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-06 19:12:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,086 INFO L225 Difference]: With dead ends: 175 [2021-12-06 19:12:43,087 INFO L226 Difference]: Without dead ends: 175 [2021-12-06 19:12:43,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:43,088 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 167 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 116 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:43,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-06 19:12:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-12-06 19:12:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 97 states have (on average 1.8762886597938144) internal successors, (182), 170 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2021-12-06 19:12:43,097 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 3 [2021-12-06 19:12:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,097 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2021-12-06 19:12:43,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2021-12-06 19:12:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:12:43,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:12:43,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2021-12-06 19:12:43,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481812424] [2021-12-06 19:12:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481812424] [2021-12-06 19:12:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481812424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:12:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134308033] [2021-12-06 19:12:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:12:43,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:12:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:12:43,162 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,289 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2021-12-06 19:12:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:12:43,290 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 19:12:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,291 INFO L225 Difference]: With dead ends: 178 [2021-12-06 19:12:43,291 INFO L226 Difference]: Without dead ends: 178 [2021-12-06 19:12:43,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:12:43,293 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 294 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 89 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-06 19:12:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 167. [2021-12-06 19:12:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 111 states have (on average 1.7027027027027026) internal successors, (189), 166 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 189 transitions. [2021-12-06 19:12:43,306 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 189 transitions. Word has length 9 [2021-12-06 19:12:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,306 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 189 transitions. [2021-12-06 19:12:43,306 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 189 transitions. [2021-12-06 19:12:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 19:12:43,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:12:43,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2021-12-06 19:12:43,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796703004] [2021-12-06 19:12:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796703004] [2021-12-06 19:12:43,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796703004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:12:43,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719599856] [2021-12-06 19:12:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:12:43,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:12:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:12:43,392 INFO L87 Difference]: Start difference. First operand 167 states and 189 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,570 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2021-12-06 19:12:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:12:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 19:12:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,572 INFO L225 Difference]: With dead ends: 258 [2021-12-06 19:12:43,572 INFO L226 Difference]: Without dead ends: 258 [2021-12-06 19:12:43,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:12:43,573 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 437 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 130 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:12:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-06 19:12:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2021-12-06 19:12:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 164 states have (on average 1.6097560975609757) internal successors, (264), 219 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2021-12-06 19:12:43,582 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 9 [2021-12-06 19:12:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,583 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2021-12-06 19:12:43,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2021-12-06 19:12:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 19:12:43,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:12:43,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 233093812, now seen corresponding path program 1 times [2021-12-06 19:12:43,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956574198] [2021-12-06 19:12:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956574198] [2021-12-06 19:12:43,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956574198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:12:43,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156855527] [2021-12-06 19:12:43,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:43,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:43,613 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,625 INFO L93 Difference]: Finished difference Result 266 states and 313 transitions. [2021-12-06 19:12:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 19:12:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,628 INFO L225 Difference]: With dead ends: 266 [2021-12-06 19:12:43,628 INFO L226 Difference]: Without dead ends: 266 [2021-12-06 19:12:43,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:43,629 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 235 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:12:43,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-06 19:12:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 233. [2021-12-06 19:12:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 177 states have (on average 1.6045197740112995) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-12-06 19:12:43,638 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 11 [2021-12-06 19:12:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,638 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-12-06 19:12:43,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-12-06 19:12:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:12:43,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:12:43,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2021-12-06 19:12:43,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354974004] [2021-12-06 19:12:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354974004] [2021-12-06 19:12:43,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354974004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:12:43,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910291510] [2021-12-06 19:12:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:12:43,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:12:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:12:43,701 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,832 INFO L93 Difference]: Finished difference Result 232 states and 281 transitions. [2021-12-06 19:12:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:12:43,832 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:12:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,833 INFO L225 Difference]: With dead ends: 232 [2021-12-06 19:12:43,833 INFO L226 Difference]: Without dead ends: 232 [2021-12-06 19:12:43,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:12:43,834 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 406 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-06 19:12:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-12-06 19:12:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 177 states have (on average 1.5875706214689265) internal successors, (281), 231 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2021-12-06 19:12:43,840 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 12 [2021-12-06 19:12:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,841 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2021-12-06 19:12:43,841 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2021-12-06 19:12:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:12:43,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:12:43,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2021-12-06 19:12:43,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664507583] [2021-12-06 19:12:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:43,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:43,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664507583] [2021-12-06 19:12:43,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664507583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:43,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:43,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:12:43,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305268800] [2021-12-06 19:12:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:43,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:12:43,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:12:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:12:43,879 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:43,983 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2021-12-06 19:12:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:12:43,984 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:12:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:43,985 INFO L225 Difference]: With dead ends: 231 [2021-12-06 19:12:43,985 INFO L226 Difference]: Without dead ends: 231 [2021-12-06 19:12:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:12:43,986 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 7 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:43,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 426 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-06 19:12:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-12-06 19:12:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 177 states have (on average 1.5706214689265536) internal successors, (278), 230 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 278 transitions. [2021-12-06 19:12:43,991 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 278 transitions. Word has length 12 [2021-12-06 19:12:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:43,991 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 278 transitions. [2021-12-06 19:12:43,991 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 278 transitions. [2021-12-06 19:12:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:12:43,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:43,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:43,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:12:43,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:43,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2021-12-06 19:12:43,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:43,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403844859] [2021-12-06 19:12:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:43,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:44,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403844859] [2021-12-06 19:12:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403844859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:44,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:12:44,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048055251] [2021-12-06 19:12:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:44,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:12:44,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:12:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:12:44,064 INFO L87 Difference]: Start difference. First operand 231 states and 278 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:44,291 INFO L93 Difference]: Finished difference Result 237 states and 279 transitions. [2021-12-06 19:12:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:12:44,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 19:12:44,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:44,293 INFO L225 Difference]: With dead ends: 237 [2021-12-06 19:12:44,293 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 19:12:44,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:12:44,294 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 291 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:44,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 289 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:12:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 19:12:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2021-12-06 19:12:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.5593220338983051) internal successors, (276), 229 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2021-12-06 19:12:44,299 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 16 [2021-12-06 19:12:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:44,299 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2021-12-06 19:12:44,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2021-12-06 19:12:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:12:44,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:44,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:44,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:12:44,300 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2021-12-06 19:12:44,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:44,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798529661] [2021-12-06 19:12:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:44,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:44,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798529661] [2021-12-06 19:12:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798529661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:44,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:44,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:12:44,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66936285] [2021-12-06 19:12:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:12:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:12:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:12:44,405 INFO L87 Difference]: Start difference. First operand 230 states and 276 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:44,821 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2021-12-06 19:12:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:12:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 19:12:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:44,823 INFO L225 Difference]: With dead ends: 232 [2021-12-06 19:12:44,823 INFO L226 Difference]: Without dead ends: 232 [2021-12-06 19:12:44,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:12:44,825 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 288 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:44,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 388 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:12:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-06 19:12:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 216. [2021-12-06 19:12:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 169 states have (on average 1.5266272189349113) internal successors, (258), 215 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2021-12-06 19:12:44,831 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 16 [2021-12-06 19:12:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:44,831 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2021-12-06 19:12:44,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2021-12-06 19:12:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:12:44,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:44,833 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:44,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:12:44,833 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash -961820477, now seen corresponding path program 1 times [2021-12-06 19:12:44,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:44,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045290072] [2021-12-06 19:12:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:44,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:44,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045290072] [2021-12-06 19:12:44,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045290072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:44,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:44,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:12:44,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081784793] [2021-12-06 19:12:44,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:44,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:12:44,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:12:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:12:44,882 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:44,956 INFO L93 Difference]: Finished difference Result 253 states and 276 transitions. [2021-12-06 19:12:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:12:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 19:12:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:44,958 INFO L225 Difference]: With dead ends: 253 [2021-12-06 19:12:44,958 INFO L226 Difference]: Without dead ends: 253 [2021-12-06 19:12:44,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:12:44,959 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 295 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:44,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 202 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-06 19:12:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 214. [2021-12-06 19:12:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 168 states have (on average 1.5119047619047619) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-12-06 19:12:44,965 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 25 [2021-12-06 19:12:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:44,966 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-12-06 19:12:44,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-12-06 19:12:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:12:44,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:44,967 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:44,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:12:44,967 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912174, now seen corresponding path program 1 times [2021-12-06 19:12:44,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508634566] [2021-12-06 19:12:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:44,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:45,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508634566] [2021-12-06 19:12:45,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508634566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:12:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386996244] [2021-12-06 19:12:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:45,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:45,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:12:45,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:12:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 19:12:45,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:12:45,249 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 [2021-12-06 19:12:45,323 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:12:45,323 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 11 treesize of output 11 [2021-12-06 19:12:45,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-12-06 19:12:45,432 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:45,432 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 19 treesize of output 22 [2021-12-06 19:12:45,500 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:45,500 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 22 treesize of output 22 [2021-12-06 19:12:45,553 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:45,553 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 28 treesize of output 29 [2021-12-06 19:12:45,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:45,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:45,673 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-12-06 19:12:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:45,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:12:45,883 INFO L354 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2021-12-06 19:12:45,883 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 19 treesize of output 18 [2021-12-06 19:12:45,899 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int)) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_71|) |c_ULTIMATE.start_main_~x~0#1.base|) (< |v_ULTIMATE.start_main_~x~0#1.offset_71| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_71|))) is different from false [2021-12-06 19:12:45,913 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int)) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_71|) |c_ULTIMATE.start_main_#t~mem5#1.base|) (< |v_ULTIMATE.start_main_~x~0#1.offset_71| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_71|))) is different from false [2021-12-06 19:12:45,926 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int)) (or (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_71|) .cse0)) (< |v_ULTIMATE.start_main_~x~0#1.offset_71| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_71|))) is different from false [2021-12-06 19:12:45,948 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int) (v_ArrVal_334 (Array Int Int))) (or (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_334))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_71|) .cse1))) (< |v_ULTIMATE.start_main_~x~0#1.offset_71| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_71|))) is different from false [2021-12-06 19:12:45,962 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_336 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_71| Int) (v_ArrVal_334 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_334))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_336) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_71|)))) (< |v_ULTIMATE.start_main_~x~0#1.offset_71| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_71|))) is different from false [2021-12-06 19:12:45,986 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:45,987 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2021-12-06 19:12:45,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:45,996 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 137 [2021-12-06 19:12:46,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 122 treesize of output 114 [2021-12-06 19:12:46,012 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:46,012 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 114 treesize of output 102 [2021-12-06 19:12:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:46,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386996244] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:12:46,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:12:46,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2021-12-06 19:12:46,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290560838] [2021-12-06 19:12:46,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:12:46,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:12:46,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:12:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=780, Unknown=8, NotChecked=300, Total=1190 [2021-12-06 19:12:46,743 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:47,861 INFO L93 Difference]: Finished difference Result 505 states and 581 transitions. [2021-12-06 19:12:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:12:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 19:12:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:47,864 INFO L225 Difference]: With dead ends: 505 [2021-12-06 19:12:47,864 INFO L226 Difference]: Without dead ends: 505 [2021-12-06 19:12:47,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=1728, Unknown=8, NotChecked=460, Total=2550 [2021-12-06 19:12:47,866 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 773 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1883 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:47,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1654 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1611 Invalid, 0 Unknown, 1883 Unchecked, 0.6s Time] [2021-12-06 19:12:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-06 19:12:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 239. [2021-12-06 19:12:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.471502590673575) internal successors, (284), 238 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2021-12-06 19:12:47,875 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 31 [2021-12-06 19:12:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:47,875 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2021-12-06 19:12:47,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5294117647058822) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2021-12-06 19:12:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:12:47,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:47,877 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:47,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:12:48,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 19:12:48,078 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1496912173, now seen corresponding path program 1 times [2021-12-06 19:12:48,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:48,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765808214] [2021-12-06 19:12:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:48,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:48,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765808214] [2021-12-06 19:12:48,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765808214] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:12:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475264827] [2021-12-06 19:12:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:48,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:48,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:12:48,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:12:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:12:48,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:12:48,338 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 [2021-12-06 19:12:48,386 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 [2021-12-06 19:12:48,394 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:12:48,394 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 11 treesize of output 11 [2021-12-06 19:12:48,422 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 [2021-12-06 19:12:48,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-12-06 19:12:48,503 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:48,503 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 38 treesize of output 37 [2021-12-06 19:12:48,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:12:48,573 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:48,573 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 31 treesize of output 29 [2021-12-06 19:12:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:12:48,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:12:48,613 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:48,613 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 38 treesize of output 37 [2021-12-06 19:12:48,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:12:48,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:48,753 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:12:48,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:48,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:48,759 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-12-06 19:12:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:48,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:12:50,503 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:50,503 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 105 [2021-12-06 19:12:50,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:50,510 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 81 [2021-12-06 19:12:50,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:50,520 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 688 treesize of output 619 [2021-12-06 19:12:50,536 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:50,537 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 3027 treesize of output 2898 [2021-12-06 19:12:50,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2867 treesize of output 2739 [2021-12-06 19:12:50,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2739 treesize of output 2675 [2021-12-06 19:12:50,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2675 treesize of output 2547 [2021-12-06 19:12:50,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:50,648 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 2547 treesize of output 2384 [2021-12-06 19:12:50,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2375 treesize of output 2367 [2021-12-06 19:12:50,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2367 treesize of output 2363 [2021-12-06 19:12:50,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2363 treesize of output 2355 [2021-12-06 19:12:50,718 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 19:12:50,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:12:50,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-06 19:12:50,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641053973] [2021-12-06 19:12:50,718 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:12:50,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 19:12:50,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 19:12:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=918, Unknown=23, NotChecked=0, Total=1056 [2021-12-06 19:12:50,719 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:51,492 INFO L93 Difference]: Finished difference Result 413 states and 465 transitions. [2021-12-06 19:12:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:12:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 19:12:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:51,494 INFO L225 Difference]: With dead ends: 413 [2021-12-06 19:12:51,494 INFO L226 Difference]: Without dead ends: 413 [2021-12-06 19:12:51,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=265, Invalid=1782, Unknown=23, NotChecked=0, Total=2070 [2021-12-06 19:12:51,495 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 782 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:51,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 582 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:12:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-06 19:12:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 239. [2021-12-06 19:12:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 238 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2021-12-06 19:12:51,500 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 31 [2021-12-06 19:12:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:51,500 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2021-12-06 19:12:51,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2021-12-06 19:12:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:12:51,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:51,501 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:51,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:12:51,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:51,703 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:51,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash 290187840, now seen corresponding path program 1 times [2021-12-06 19:12:51,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:51,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511722998] [2021-12-06 19:12:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:51,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:51,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:51,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511722998] [2021-12-06 19:12:51,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511722998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:51,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:51,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:12:51,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854194108] [2021-12-06 19:12:51,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:51,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:51,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:51,767 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:51,774 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2021-12-06 19:12:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:12:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:51,775 INFO L225 Difference]: With dead ends: 241 [2021-12-06 19:12:51,775 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 19:12:51,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:51,776 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:51,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:12:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 19:12:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-12-06 19:12:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 195 states have (on average 1.4615384615384615) internal successors, (285), 240 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 285 transitions. [2021-12-06 19:12:51,780 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 285 transitions. Word has length 33 [2021-12-06 19:12:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:51,781 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 285 transitions. [2021-12-06 19:12:51,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 285 transitions. [2021-12-06 19:12:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:12:51,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:51,782 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:51,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:12:51,782 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2033494590, now seen corresponding path program 1 times [2021-12-06 19:12:51,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:51,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067624092] [2021-12-06 19:12:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:51,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:51,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067624092] [2021-12-06 19:12:51,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067624092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:51,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:51,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:12:51,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551731116] [2021-12-06 19:12:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:51,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:12:51,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:12:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:12:51,848 INFO L87 Difference]: Start difference. First operand 241 states and 285 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:52,018 INFO L93 Difference]: Finished difference Result 258 states and 304 transitions. [2021-12-06 19:12:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:12:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:12:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:52,019 INFO L225 Difference]: With dead ends: 258 [2021-12-06 19:12:52,019 INFO L226 Difference]: Without dead ends: 258 [2021-12-06 19:12:52,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:12:52,020 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:52,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 619 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-06 19:12:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 249. [2021-12-06 19:12:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 203 states have (on average 1.4482758620689655) internal successors, (294), 248 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2021-12-06 19:12:52,024 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 36 [2021-12-06 19:12:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:52,024 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-12-06 19:12:52,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2021-12-06 19:12:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:12:52,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:52,025 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:52,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:12:52,025 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554172, now seen corresponding path program 1 times [2021-12-06 19:12:52,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778185520] [2021-12-06 19:12:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:52,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:52,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:52,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778185520] [2021-12-06 19:12:52,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778185520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:52,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:52,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:12:52,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141010060] [2021-12-06 19:12:52,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:52,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:52,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:52,061 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:52,112 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2021-12-06 19:12:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:52,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:12:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:52,113 INFO L225 Difference]: With dead ends: 246 [2021-12-06 19:12:52,113 INFO L226 Difference]: Without dead ends: 246 [2021-12-06 19:12:52,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:52,114 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 78 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:52,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 170 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:12:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-06 19:12:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2021-12-06 19:12:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 244 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 286 transitions. [2021-12-06 19:12:52,118 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 286 transitions. Word has length 36 [2021-12-06 19:12:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:52,118 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 286 transitions. [2021-12-06 19:12:52,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 286 transitions. [2021-12-06 19:12:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:12:52,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:52,119 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:52,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:12:52,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2033554173, now seen corresponding path program 1 times [2021-12-06 19:12:52,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:52,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442650604] [2021-12-06 19:12:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:52,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:52,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:52,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442650604] [2021-12-06 19:12:52,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442650604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:52,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:52,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:12:52,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405164337] [2021-12-06 19:12:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:52,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:12:52,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:12:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:52,155 INFO L87 Difference]: Start difference. First operand 245 states and 286 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:52,213 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2021-12-06 19:12:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:12:52,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:12:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:52,215 INFO L225 Difference]: With dead ends: 241 [2021-12-06 19:12:52,215 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 19:12:52,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:12:52,215 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:52,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 148 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 19:12:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-12-06 19:12:52,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 203 states have (on average 1.3694581280788178) internal successors, (278), 240 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 278 transitions. [2021-12-06 19:12:52,220 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 278 transitions. Word has length 36 [2021-12-06 19:12:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:52,220 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 278 transitions. [2021-12-06 19:12:52,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 278 transitions. [2021-12-06 19:12:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:12:52,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:52,220 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:12:52,221 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 817273180, now seen corresponding path program 1 times [2021-12-06 19:12:52,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893626669] [2021-12-06 19:12:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:52,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:52,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893626669] [2021-12-06 19:12:52,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893626669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:52,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:52,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:12:52,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15030211] [2021-12-06 19:12:52,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:52,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:12:52,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:52,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:12:52,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:12:52,261 INFO L87 Difference]: Start difference. First operand 241 states and 278 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:52,475 INFO L93 Difference]: Finished difference Result 261 states and 299 transitions. [2021-12-06 19:12:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:12:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:12:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:52,476 INFO L225 Difference]: With dead ends: 261 [2021-12-06 19:12:52,476 INFO L226 Difference]: Without dead ends: 261 [2021-12-06 19:12:52,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:12:52,477 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:52,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 335 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:12:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-06 19:12:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2021-12-06 19:12:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 203 states have (on average 1.3645320197044335) internal successors, (277), 239 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 277 transitions. [2021-12-06 19:12:52,481 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 277 transitions. Word has length 36 [2021-12-06 19:12:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:52,481 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 277 transitions. [2021-12-06 19:12:52,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 277 transitions. [2021-12-06 19:12:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:12:52,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:52,482 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:52,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:12:52,482 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash 817273181, now seen corresponding path program 1 times [2021-12-06 19:12:52,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:52,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342057712] [2021-12-06 19:12:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:52,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:52,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:52,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342057712] [2021-12-06 19:12:52,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342057712] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:12:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883456694] [2021-12-06 19:12:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:52,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:52,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:12:52,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:12:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:52,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 19:12:52,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:12:52,761 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 [2021-12-06 19:12:52,823 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:12:52,823 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 11 treesize of output 11 [2021-12-06 19:12:52,852 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 [2021-12-06 19:12:52,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-12-06 19:12:52,931 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:52,932 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 29 treesize of output 30 [2021-12-06 19:12:52,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:12:52,953 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 16 treesize of output 8 [2021-12-06 19:12:52,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:12:53,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 19:12:53,166 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 23 treesize of output 15 [2021-12-06 19:12:53,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:53,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:53,170 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2021-12-06 19:12:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:53,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:12:53,277 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:53,278 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 31 treesize of output 35 [2021-12-06 19:12:53,421 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_78| Int)) (or (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_78|)) (< |v_ULTIMATE.start_main_~x~0#1.offset_78| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_78|))) is different from false [2021-12-06 19:12:53,465 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_78| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_78| 0) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_78|)) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_78|))) is different from false [2021-12-06 19:12:53,476 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_78| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_78| 0) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_777) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_78|)) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_78|))) is different from false [2021-12-06 19:12:53,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_775 (Array Int Int)) (v_ArrVal_774 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_78| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_78| 0) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_775) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_774) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_777) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_78|)) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_78|))) is different from false [2021-12-06 19:12:53,512 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_775 (Array Int Int)) (v_ArrVal_774 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.offset_78| Int)) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_78| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_78|) (<= 0 (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_775) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_774) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_777)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_78|)))) is different from false [2021-12-06 19:12:53,532 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:53,532 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2021-12-06 19:12:53,537 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:53,537 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 19:12:53,547 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 50 treesize of output 42 [2021-12-06 19:12:53,554 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:12:53,554 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 99 [2021-12-06 19:12:53,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 60 treesize of output 52 [2021-12-06 19:12:53,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 52 treesize of output 50 [2021-12-06 19:12:53,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 74 treesize of output 68 [2021-12-06 19:12:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:53,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883456694] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:12:53,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:12:53,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 44 [2021-12-06 19:12:53,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623116701] [2021-12-06 19:12:53,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:12:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-06 19:12:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-06 19:12:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1396, Unknown=5, NotChecked=400, Total=1980 [2021-12-06 19:12:53,862 INFO L87 Difference]: Start difference. First operand 240 states and 277 transitions. Second operand has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:55,537 INFO L93 Difference]: Finished difference Result 343 states and 389 transitions. [2021-12-06 19:12:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 19:12:55,538 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:12:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:55,539 INFO L225 Difference]: With dead ends: 343 [2021-12-06 19:12:55,539 INFO L226 Difference]: Without dead ends: 343 [2021-12-06 19:12:55,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=683, Invalid=3754, Unknown=5, NotChecked=670, Total=5112 [2021-12-06 19:12:55,541 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 456 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 3565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1232 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:55,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 2369 Invalid, 3565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2211 Invalid, 0 Unknown, 1232 Unchecked, 0.9s Time] [2021-12-06 19:12:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-06 19:12:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 227. [2021-12-06 19:12:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 197 states have (on average 1.3248730964467006) internal successors, (261), 226 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2021-12-06 19:12:55,547 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 36 [2021-12-06 19:12:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:55,547 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2021-12-06 19:12:55,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.409090909090909) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2021-12-06 19:12:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 19:12:55,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:55,548 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:55,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:12:55,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 19:12:55,749 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322487, now seen corresponding path program 1 times [2021-12-06 19:12:55,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32717046] [2021-12-06 19:12:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:55,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:55,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:55,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32717046] [2021-12-06 19:12:55,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32717046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:55,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:12:55,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:12:55,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751314171] [2021-12-06 19:12:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:55,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:12:55,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:12:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:12:55,827 INFO L87 Difference]: Start difference. First operand 227 states and 261 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:55,968 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2021-12-06 19:12:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:12:55,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-06 19:12:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:55,969 INFO L225 Difference]: With dead ends: 247 [2021-12-06 19:12:55,969 INFO L226 Difference]: Without dead ends: 247 [2021-12-06 19:12:55,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:12:55,970 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 101 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:55,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 334 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-06 19:12:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 233. [2021-12-06 19:12:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 232 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 270 transitions. [2021-12-06 19:12:55,974 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 270 transitions. Word has length 40 [2021-12-06 19:12:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:55,974 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 270 transitions. [2021-12-06 19:12:55,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 270 transitions. [2021-12-06 19:12:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 19:12:55,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:55,974 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:55,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:12:55,975 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322486, now seen corresponding path program 1 times [2021-12-06 19:12:55,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:55,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689038596] [2021-12-06 19:12:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:55,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:56,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689038596] [2021-12-06 19:12:56,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689038596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:12:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500047314] [2021-12-06 19:12:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:56,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:56,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:12:56,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:12:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:56,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:12:56,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:12:56,304 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 23 treesize of output 15 [2021-12-06 19:12:56,307 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 28 treesize of output 16 [2021-12-06 19:12:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 19:12:56,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:12:56,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500047314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:12:56,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:12:56,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2021-12-06 19:12:56,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193528731] [2021-12-06 19:12:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:12:56,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:12:56,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:12:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:12:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:12:56,337 INFO L87 Difference]: Start difference. First operand 233 states and 270 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:12:56,492 INFO L93 Difference]: Finished difference Result 242 states and 277 transitions. [2021-12-06 19:12:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:12:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-06 19:12:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:12:56,493 INFO L225 Difference]: With dead ends: 242 [2021-12-06 19:12:56,493 INFO L226 Difference]: Without dead ends: 242 [2021-12-06 19:12:56,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:12:56,494 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 53 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:12:56,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 412 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:12:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-06 19:12:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 231. [2021-12-06 19:12:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 203 states have (on average 1.3054187192118227) internal successors, (265), 230 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 265 transitions. [2021-12-06 19:12:56,500 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 265 transitions. Word has length 40 [2021-12-06 19:12:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:12:56,500 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 265 transitions. [2021-12-06 19:12:56,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:12:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 265 transitions. [2021-12-06 19:12:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 19:12:56,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:12:56,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:12:56,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:12:56,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:56,702 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 76 more)] === [2021-12-06 19:12:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:12:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1458488866, now seen corresponding path program 1 times [2021-12-06 19:12:56,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:12:56,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448292969] [2021-12-06 19:12:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:56,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:12:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:56,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:12:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448292969] [2021-12-06 19:12:56,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448292969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:12:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783060656] [2021-12-06 19:12:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:12:56,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:12:56,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:12:56,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:12:56,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4699635-deef-4594-8c10-1a226e0630e8/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:12:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:12:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 19:12:57,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:12:57,040 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 [2021-12-06 19:12:57,083 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:12:57,083 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 11 treesize of output 11 [2021-12-06 19:12:57,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-12-06 19:12:57,117 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 [2021-12-06 19:12:57,187 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 19:12:57,188 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 29 treesize of output 30 [2021-12-06 19:12:57,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 19:12:57,262 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 19:12:57,263 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 26 treesize of output 21 [2021-12-06 19:12:57,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,274 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 19:12:57,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-06 19:12:57,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:12:57,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:12:57,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,353 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:12:57,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 70 [2021-12-06 19:12:57,361 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-06 19:12:57,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2021-12-06 19:12:57,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,723 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-06 19:12:57,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 42 [2021-12-06 19:12:57,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:12:57,730 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:12:57,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2021-12-06 19:12:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:12:57,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:13:05,393 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:13:05,393 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 620 treesize of output 476 [2021-12-06 19:13:05,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:13:05,402 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 340 [2021-12-06 19:13:06,501 INFO L354 Elim1Store]: treesize reduction 238, result has 62.3 percent of original size [2021-12-06 19:13:06,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 16006 treesize of output 14598 [2021-12-06 19:13:09,311 INFO L354 Elim1Store]: treesize reduction 428, result has 65.7 percent of original size [2021-12-06 19:13:09,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 78 case distinctions, treesize of input 276215 treesize of output 236807 [2021-12-06 19:13:13,203 INFO L354 Elim1Store]: treesize reduction 44, result has 93.0 percent of original size [2021-12-06 19:13:13,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 641007 treesize of output 528589 [2021-12-06 19:13:57,890 WARN L227 SmtUtils]: Spent 44.68s on a formula simplification. DAG size of input: 4171 DAG size of output: 4140 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:14:04,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:14:04,088 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 601416 treesize of output 581288 [2021-12-06 19:14:12,225 WARN L227 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 4289 DAG size of output: 4289 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:14:16,650 INFO L354 Elim1Store]: treesize reduction 64, result has 92.1 percent of original size [2021-12-06 19:14:16,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 638808 treesize of output 632822 [2021-12-06 19:14:34,930 WARN L227 SmtUtils]: Spent 18.27s on a formula simplification. DAG size of input: 4780 DAG size of output: 4754 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:14:47,377 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 3989 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:16:18,401 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 3985 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:16:33,941 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 3981 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:18:07,661 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 3977 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:18:23,099 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 3973 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:18:38,573 WARN L227 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 3969 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 19:18:53,992 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 3965 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)