./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:00:13,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:00:13,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:00:13,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:00:13,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:00:13,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:00:13,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:00:13,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:00:13,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:00:13,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:00:13,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:00:13,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:00:13,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:00:13,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:00:13,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:00:13,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:00:13,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:00:13,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:00:13,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:00:13,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:00:13,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:00:13,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:00:13,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:00:13,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:00:13,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:00:13,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:00:13,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:00:13,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:00:13,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:00:13,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:00:13,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:00:13,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:00:13,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:00:13,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:00:13,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:00:13,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:00:13,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:00:13,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:00:13,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:00:13,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:00:13,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:00:13,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:00:13,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:00:13,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:00:13,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:00:13,974 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:00:13,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:00:13,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:00:13,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:00:13,975 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:00:13,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:00:13,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:00:13,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:00:13,975 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:00:13,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:00:13,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:00:13,976 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:00:13,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:00:13,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:00:13,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:00:13,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:00:13,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:00:13,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:00:13,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:00:13,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:00:13,978 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:00:13,979 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:00:13,979 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:00:13,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:00:13,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:00:13,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:00:13,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:00:13,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:00:13,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:00:13,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:13,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:00:13,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:00:13,981 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:00:13,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:00:13,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:00:13,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:00:13,982 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 [2021-11-03 04:00:14,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:00:14,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:00:14,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:00:14,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:00:14,241 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:00:14,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-11-03 04:00:14,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/8f7aa6d99/942739e40a184f119badab58c4627616/FLAG988b77927 [2021-11-03 04:00:14,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:00:14,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-11-03 04:00:14,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/8f7aa6d99/942739e40a184f119badab58c4627616/FLAG988b77927 [2021-11-03 04:00:15,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/8f7aa6d99/942739e40a184f119badab58c4627616 [2021-11-03 04:00:15,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:00:15,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:00:15,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:15,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:00:15,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:00:15,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d398e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15, skipping insertion in model container [2021-11-03 04:00:15,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:00:15,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:00:15,753 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-11-03 04:00:15,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-11-03 04:00:15,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-11-03 04:00:15,759 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-11-03 04:00:15,760 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-11-03 04:00:15,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-11-03 04:00:15,762 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-11-03 04:00:15,763 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-11-03 04:00:15,764 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-11-03 04:00:15,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-11-03 04:00:15,766 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-11-03 04:00:15,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-11-03 04:00:15,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-11-03 04:00:15,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-11-03 04:00:15,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:15,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:00:15,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-11-03 04:00:15,834 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-11-03 04:00:15,835 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-11-03 04:00:15,835 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-11-03 04:00:15,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-11-03 04:00:15,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-11-03 04:00:15,838 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-11-03 04:00:15,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-11-03 04:00:15,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-11-03 04:00:15,841 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-11-03 04:00:15,842 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-11-03 04:00:15,843 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-11-03 04:00:15,844 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-11-03 04:00:15,846 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-11-03 04:00:15,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:15,882 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:00:15,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15 WrapperNode [2021-11-03 04:00:15,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:15,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:15,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:00:15,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:00:15,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:15,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:00:15,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:00:15,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:00:15,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:15,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:16,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:00:16,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:00:16,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:00:16,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:00:16,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (1/1) ... [2021-11-03 04:00:16,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:16,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:00:16,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:00:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:00:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:00:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:00:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:00:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:00:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:00:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:00:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:00:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:00:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:00:16,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:00:16,977 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-11-03 04:00:16,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:16 BoogieIcfgContainer [2021-11-03 04:00:16,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:00:16,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:00:16,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:00:16,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:00:16,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:15" (1/3) ... [2021-11-03 04:00:16,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:16, skipping insertion in model container [2021-11-03 04:00:16,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:15" (2/3) ... [2021-11-03 04:00:16,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e8279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:16, skipping insertion in model container [2021-11-03 04:00:16,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:16" (3/3) ... [2021-11-03 04:00:16,995 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-11-03 04:00:17,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:00:17,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-03 04:00:17,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:00:17,060 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 [2021-11-03 04:00:17,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-03 04:00:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 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) [2021-11-03 04:00:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-03 04:00:17,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:17,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-03 04:00:17,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:17,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash 14667, now seen corresponding path program 1 times [2021-11-03 04:00:17,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:17,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016820435] [2021-11-03 04:00:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:17,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:17,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:17,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016820435] [2021-11-03 04:00:17,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016820435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:17,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:17,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:00:17,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8157470] [2021-11-03 04:00:17,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:17,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:17,334 INFO L87 Difference]: Start difference. First operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-03 04:00:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:17,576 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-03 04:00:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-03 04:00:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:17,597 INFO L225 Difference]: With dead ends: 161 [2021-11-03 04:00:17,598 INFO L226 Difference]: Without dead ends: 159 [2021-11-03 04:00:17,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-03 04:00:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-03 04:00:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 91 states have (on average 1.835164835164835) internal successors, (167), 155 states have internal predecessors, (167), 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) [2021-11-03 04:00:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-03 04:00:17,658 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 2 [2021-11-03 04:00:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:17,659 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-03 04:00:17,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-03 04:00:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-03 04:00:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-03 04:00:17,660 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:17,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-03 04:00:17,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:00:17,661 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash 14668, now seen corresponding path program 1 times [2021-11-03 04:00:17,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:17,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039171668] [2021-11-03 04:00:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:17,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:17,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:17,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039171668] [2021-11-03 04:00:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039171668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:17,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:17,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-03 04:00:17,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071589025] [2021-11-03 04:00:17,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:17,760 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-03 04:00:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:17,892 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-11-03 04:00:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:17,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-03 04:00:17,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:17,904 INFO L225 Difference]: With dead ends: 147 [2021-11-03 04:00:17,905 INFO L226 Difference]: Without dead ends: 147 [2021-11-03 04:00:17,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-03 04:00:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-11-03 04:00:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 144 states have internal predecessors, (155), 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) [2021-11-03 04:00:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-11-03 04:00:17,926 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 2 [2021-11-03 04:00:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:17,927 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-11-03 04:00:17,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-03 04:00:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-11-03 04:00:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:00:17,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:17,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:17,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:00:17,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821487, now seen corresponding path program 1 times [2021-11-03 04:00:17,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:17,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904362158] [2021-11-03 04:00:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:17,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:18,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904362158] [2021-11-03 04:00:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904362158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:18,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581666466] [2021-11-03 04:00:18,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:18,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:18,052 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 04:00:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:18,205 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2021-11-03 04:00:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-03 04:00:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:18,207 INFO L225 Difference]: With dead ends: 152 [2021-11-03 04:00:18,208 INFO L226 Difference]: Without dead ends: 152 [2021-11-03 04:00:18,208 INFO L786 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 [2021-11-03 04:00:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-03 04:00:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-11-03 04:00:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 144 states have internal predecessors, (159), 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) [2021-11-03 04:00:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-03 04:00:18,218 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 7 [2021-11-03 04:00:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:18,218 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-03 04:00:18,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 04:00:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-03 04:00:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:00:18,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:18,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:18,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:00:18,220 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821486, now seen corresponding path program 1 times [2021-11-03 04:00:18,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:18,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582170797] [2021-11-03 04:00:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:18,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:18,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582170797] [2021-11-03 04:00:18,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582170797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:18,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300462159] [2021-11-03 04:00:18,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:18,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:18,329 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-03 04:00:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:18,543 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2021-11-03 04:00:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-11-03 04:00:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:18,546 INFO L225 Difference]: With dead ends: 235 [2021-11-03 04:00:18,546 INFO L226 Difference]: Without dead ends: 235 [2021-11-03 04:00:18,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-03 04:00:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 151. [2021-11-03 04:00:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 150 states have internal predecessors, (167), 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) [2021-11-03 04:00:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-11-03 04:00:18,576 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 7 [2021-11-03 04:00:18,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:18,576 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-11-03 04:00:18,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-03 04:00:18,577 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-11-03 04:00:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:00:18,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:18,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:18,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:00:18,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1332694170, now seen corresponding path program 1 times [2021-11-03 04:00:18,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:18,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042844723] [2021-11-03 04:00:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:18,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:18,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042844723] [2021-11-03 04:00:18,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042844723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:18,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141708563] [2021-11-03 04:00:18,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:18,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:18,624 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-03 04:00:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:18,655 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-11-03 04:00:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-03 04:00:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:18,657 INFO L225 Difference]: With dead ends: 141 [2021-11-03 04:00:18,657 INFO L226 Difference]: Without dead ends: 141 [2021-11-03 04:00:18,657 INFO L786 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 [2021-11-03 04:00:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-03 04:00:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-03 04:00:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.5918367346938775) internal successors, (156), 140 states have internal predecessors, (156), 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) [2021-11-03 04:00:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2021-11-03 04:00:18,664 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 8 [2021-11-03 04:00:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:18,664 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2021-11-03 04:00:18,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-03 04:00:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2021-11-03 04:00:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:00:18,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:18,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:18,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:00:18,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537440, now seen corresponding path program 1 times [2021-11-03 04:00:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:18,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101897406] [2021-11-03 04:00:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:18,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:18,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:18,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101897406] [2021-11-03 04:00:18,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101897406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:18,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:18,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:00:18,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416598040] [2021-11-03 04:00:18,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:18,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:18,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:18,755 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-11-03 04:00:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:18,913 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-11-03 04:00:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2021-11-03 04:00:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:18,915 INFO L225 Difference]: With dead ends: 140 [2021-11-03 04:00:18,915 INFO L226 Difference]: Without dead ends: 140 [2021-11-03 04:00:18,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-03 04:00:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-03 04:00:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.5714285714285714) internal successors, (154), 139 states have internal predecessors, (154), 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) [2021-11-03 04:00:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-11-03 04:00:18,920 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 9 [2021-11-03 04:00:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:18,921 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-11-03 04:00:18,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-11-03 04:00:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-11-03 04:00:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:00:18,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:18,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:18,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:00:18,922 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537439, now seen corresponding path program 1 times [2021-11-03 04:00:18,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:18,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164406527] [2021-11-03 04:00:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:18,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:19,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:19,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164406527] [2021-11-03 04:00:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164406527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:19,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:19,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:00:19,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290346584] [2021-11-03 04:00:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:19,017 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-11-03 04:00:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:19,159 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2021-11-03 04:00:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2021-11-03 04:00:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:19,160 INFO L225 Difference]: With dead ends: 139 [2021-11-03 04:00:19,160 INFO L226 Difference]: Without dead ends: 139 [2021-11-03 04:00:19,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-03 04:00:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-03 04:00:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 138 states have internal predecessors, (152), 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) [2021-11-03 04:00:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-03 04:00:19,165 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 9 [2021-11-03 04:00:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:19,166 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-03 04:00:19,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2021-11-03 04:00:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-03 04:00:19,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:00:19,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:19,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:00:19,167 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:19,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash 754854527, now seen corresponding path program 1 times [2021-11-03 04:00:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:19,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127551794] [2021-11-03 04:00:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:19,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:19,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:19,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127551794] [2021-11-03 04:00:19,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127551794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:19,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:19,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 04:00:19,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318864024] [2021-11-03 04:00:19,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:19,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:19,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:00:19,364 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-11-03 04:00:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:19,669 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2021-11-03 04:00:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:00:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2021-11-03 04:00:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:19,671 INFO L225 Difference]: With dead ends: 142 [2021-11-03 04:00:19,671 INFO L226 Difference]: Without dead ends: 142 [2021-11-03 04:00:19,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:00:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-03 04:00:19,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-11-03 04:00:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 137 states have internal predecessors, (151), 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) [2021-11-03 04:00:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-03 04:00:19,676 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 11 [2021-11-03 04:00:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:19,677 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-03 04:00:19,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2021-11-03 04:00:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-03 04:00:19,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:00:19,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:19,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:19,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 04:00:19,678 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:19,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash 754854528, now seen corresponding path program 1 times [2021-11-03 04:00:19,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:19,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801407247] [2021-11-03 04:00:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:19,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:19,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801407247] [2021-11-03 04:00:19,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801407247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:19,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:19,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 04:00:19,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105561370] [2021-11-03 04:00:19,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:00:19,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:00:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:00:19,846 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-11-03 04:00:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,395 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2021-11-03 04:00:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:00:20,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 [2021-11-03 04:00:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,397 INFO L225 Difference]: With dead ends: 203 [2021-11-03 04:00:20,397 INFO L226 Difference]: Without dead ends: 203 [2021-11-03 04:00:20,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:00:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-03 04:00:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2021-11-03 04:00:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 124 states have internal predecessors, (137), 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) [2021-11-03 04:00:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-11-03 04:00:20,401 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 11 [2021-11-03 04:00:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:20,401 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-11-03 04:00:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2021-11-03 04:00:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-11-03 04:00:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:00:20,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:20,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:20,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 04:00:20,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 42463835, now seen corresponding path program 1 times [2021-11-03 04:00:20,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:20,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857269488] [2021-11-03 04:00:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:20,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:20,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857269488] [2021-11-03 04:00:20,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857269488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:20,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979817432] [2021-11-03 04:00:20,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:20,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:20,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:20,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:20,436 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-03 04:00:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,465 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-11-03 04:00:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-03 04:00:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,467 INFO L225 Difference]: With dead ends: 173 [2021-11-03 04:00:20,467 INFO L226 Difference]: Without dead ends: 173 [2021-11-03 04:00:20,468 INFO L786 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 [2021-11-03 04:00:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-03 04:00:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-11-03 04:00:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 105 states have (on average 1.438095238095238) internal successors, (151), 137 states have internal predecessors, (151), 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) [2021-11-03 04:00:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-03 04:00:20,473 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 14 [2021-11-03 04:00:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:20,473 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-03 04:00:20,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-03 04:00:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-03 04:00:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:00:20,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:20,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:20,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 04:00:20,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2115560054, now seen corresponding path program 1 times [2021-11-03 04:00:20,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:20,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318318587] [2021-11-03 04:00:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:20,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:20,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318318587] [2021-11-03 04:00:20,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318318587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 04:00:20,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269050213] [2021-11-03 04:00:20,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:20,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:20,579 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-03 04:00:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,697 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2021-11-03 04:00:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:00:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-11-03 04:00:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,700 INFO L225 Difference]: With dead ends: 143 [2021-11-03 04:00:20,700 INFO L226 Difference]: Without dead ends: 143 [2021-11-03 04:00:20,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:00:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-03 04:00:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-11-03 04:00:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 140 states have internal predecessors, (154), 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) [2021-11-03 04:00:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2021-11-03 04:00:20,706 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 17 [2021-11-03 04:00:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:20,706 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2021-11-03 04:00:20,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-03 04:00:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2021-11-03 04:00:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:00:20,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:20,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:20,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 04:00:20,707 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 658823248, now seen corresponding path program 1 times [2021-11-03 04:00:20,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:20,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125472821] [2021-11-03 04:00:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:20,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:20,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125472821] [2021-11-03 04:00:20,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125472821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:00:20,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923843490] [2021-11-03 04:00:20,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:20,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:20,766 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-03 04:00:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,856 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2021-11-03 04:00:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-03 04:00:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,858 INFO L225 Difference]: With dead ends: 142 [2021-11-03 04:00:20,858 INFO L226 Difference]: Without dead ends: 142 [2021-11-03 04:00:20,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-03 04:00:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2021-11-03 04:00:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.4205607476635513) internal successors, (152), 138 states have internal predecessors, (152), 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) [2021-11-03 04:00:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-03 04:00:20,863 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 17 [2021-11-03 04:00:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:20,863 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-03 04:00:20,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-03 04:00:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-03 04:00:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:00:20,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:20,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:20,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 04:00:20,865 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1158449302, now seen corresponding path program 1 times [2021-11-03 04:00:20,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:20,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396871249] [2021-11-03 04:00:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:20,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:20,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:20,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396871249] [2021-11-03 04:00:20,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396871249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:20,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:20,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:20,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423347646] [2021-11-03 04:00:20,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:00:20,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:00:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:20,910 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-03 04:00:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:20,994 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2021-11-03 04:00:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-11-03 04:00:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:20,996 INFO L225 Difference]: With dead ends: 139 [2021-11-03 04:00:20,996 INFO L226 Difference]: Without dead ends: 139 [2021-11-03 04:00:20,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-03 04:00:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-03 04:00:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.411214953271028) internal successors, (151), 138 states have internal predecessors, (151), 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) [2021-11-03 04:00:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2021-11-03 04:00:21,001 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 18 [2021-11-03 04:00:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:21,001 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2021-11-03 04:00:21,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-03 04:00:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2021-11-03 04:00:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:00:21,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:21,003 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:21,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 04:00:21,003 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1300477052, now seen corresponding path program 1 times [2021-11-03 04:00:21,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:21,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842161103] [2021-11-03 04:00:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:21,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:21,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:21,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842161103] [2021-11-03 04:00:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842161103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:21,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130143313] [2021-11-03 04:00:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:21,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:21,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:21,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:00:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:21,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:00:21,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:21,261 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 [2021-11-03 04:00:21,277 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 [2021-11-03 04:00:21,334 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-03 04:00:21,349 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:00:21,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-11-03 04:00:21,377 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-03 04:00:21,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:21,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-03 04:00:21,452 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-03 04:00:21,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:21,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:21,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:21,746 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:00:21,747 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 47 treesize of output 33 [2021-11-03 04:00:21,763 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:00:21,763 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 27 treesize of output 13 [2021-11-03 04:00:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:21,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:22,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:00:22,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-03 04:00:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:22,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130143313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:22,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [94301732] [2021-11-03 04:00:22,081 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-03 04:00:22,081 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:00:22,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:00:22,090 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:00:22,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:00:22,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:00:22,133 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:00:22,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 04:00:22,148 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_94|], 21=[|v_#valid_103|]} [2021-11-03 04:00:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:00:22,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:22,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:22,162 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2021-11-03 04:00:22,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:22,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:22,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-03 04:00:22,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,224 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:111 [2021-11-03 04:00:22,230 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-03 04:00:22,232 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:22,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:22,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:00:22,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-03 04:00:22,251 INFO L446 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_75|, |v_#memory_$Pointer$.offset_75|], 6=[|v_#memory_int_53|]} [2021-11-03 04:00:22,258 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 [2021-11-03 04:00:22,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:22,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:22,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,284 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 [2021-11-03 04:00:22,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:22,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:22,286 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,296 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-03 04:00:22,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,313 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-03 04:00:22,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,327 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:155, output treesize:132 [2021-11-03 04:00:22,335 INFO L180 QuantifierPusher]: treesize reduction 12, result has 93.7 percent of original size [2021-11-03 04:00:22,336 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,340 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:22,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 04:00:22,355 INFO L446 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_76|, |v_#memory_$Pointer$.offset_76|], 6=[|v_#memory_int_54|]} [2021-11-03 04:00:22,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:22,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,369 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:22,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,398 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:22,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,428 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-03 04:00:22,446 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,446 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:177, output treesize:150 [2021-11-03 04:00:22,458 INFO L180 QuantifierPusher]: treesize reduction 12, result has 94.6 percent of original size [2021-11-03 04:00:22,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:22,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:00:22,465 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:22,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 04:00:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:22,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,496 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,509 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:22,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:22,529 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-03 04:00:22,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:22,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:22,552 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,560 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:22,573 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,573 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:168 [2021-11-03 04:00:22,589 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.6 percent of original size [2021-11-03 04:00:22,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:22,618 INFO L180 QuantifierPusher]: treesize reduction 31, result has 85.5 percent of original size [2021-11-03 04:00:22,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:22,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:22,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-03 04:00:22,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:22,689 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-11-03 04:00:22,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:22,705 INFO L180 QuantifierPusher]: treesize reduction 10, result has 94.8 percent of original size [2021-11-03 04:00:22,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:22,734 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-11-03 04:00:22,737 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:22,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 04:00:22,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:22,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,772 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,780 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:22,811 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,811 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:182, output treesize:176 [2021-11-03 04:00:22,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:22,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 04:00:22,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:22,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 04:00:22,890 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:22,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-11-03 04:00:22,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,930 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:22,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 04:00:22,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:22,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-03 04:00:22,954 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-11-03 04:00:22,955 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:22,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:22,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-11-03 04:00:22,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:22,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:22,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:22,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:22,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:22,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:22,996 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:22,996 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:182, output treesize:176 [2021-11-03 04:00:22,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:23,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,170 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,177 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 04:00:23,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-11-03 04:00:23,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:23,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-11-03 04:00:23,302 INFO L180 QuantifierPusher]: treesize reduction 392, result has 70.2 percent of original size [2021-11-03 04:00:23,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,337 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:23,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 899 [2021-11-03 04:00:23,393 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:23,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 988 [2021-11-03 04:00:23,441 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:23,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:23,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:23,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 993 [2021-11-03 04:00:23,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:00:25,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [94301732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:25,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:00:25,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 5, 4] total 15 [2021-11-03 04:00:25,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267608597] [2021-11-03 04:00:25,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:00:25,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:00:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:00:25,992 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-11-03 04:00:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:27,104 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2021-11-03 04:00:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:00:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 21 [2021-11-03 04:00:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:27,106 INFO L225 Difference]: With dead ends: 151 [2021-11-03 04:00:27,106 INFO L226 Difference]: Without dead ends: 151 [2021-11-03 04:00:27,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 15 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:00:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-03 04:00:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2021-11-03 04:00:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 144 states have internal predecessors, (158), 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) [2021-11-03 04:00:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2021-11-03 04:00:27,111 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 21 [2021-11-03 04:00:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:27,111 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2021-11-03 04:00:27,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2021-11-03 04:00:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2021-11-03 04:00:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:00:27,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:27,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:27,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 04:00:27,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:27,340 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1300475953, now seen corresponding path program 1 times [2021-11-03 04:00:27,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:27,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616297735] [2021-11-03 04:00:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:27,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:27,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:27,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616297735] [2021-11-03 04:00:27,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616297735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:27,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960569053] [2021-11-03 04:00:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:27,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:27,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:27,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:00:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:27,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:00:27,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:27,642 INFO L354 Elim1Store]: treesize reduction 165, result has 24.0 percent of original size [2021-11-03 04:00:27,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 91 [2021-11-03 04:00:33,559 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-03 04:00:33,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 82 [2021-11-03 04:00:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:34,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:34,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960569053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:34,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947184094] [2021-11-03 04:00:34,235 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-03 04:00:34,236 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:00:34,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:00:34,236 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:00:34,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:00:34,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:00:34,264 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:00:34,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 04:00:34,273 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_95|], 21=[|v_#valid_109|]} [2021-11-03 04:00:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:00:34,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:34,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:34,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2021-11-03 04:00:34,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:34,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:34,312 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-03 04:00:34,319 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,320 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:111 [2021-11-03 04:00:34,323 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-03 04:00:34,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:00:34,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:34,326 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:34,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-03 04:00:34,331 INFO L446 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_81|, |v_#memory_$Pointer$.offset_81|], 6=[|v_#memory_int_59|]} [2021-11-03 04:00:34,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-03 04:00:34,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:34,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:34,339 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,344 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,354 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 [2021-11-03 04:00:34,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:34,356 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:34,356 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,361 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-03 04:00:34,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,372 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-03 04:00:34,380 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,380 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:155, output treesize:132 [2021-11-03 04:00:34,385 INFO L180 QuantifierPusher]: treesize reduction 12, result has 93.7 percent of original size [2021-11-03 04:00:34,385 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:34,386 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 04:00:34,393 INFO L446 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_82|, |v_#memory_$Pointer$.offset_82|], 6=[|v_#memory_int_60|]} [2021-11-03 04:00:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:34,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,403 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,409 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:34,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,419 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:34,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,434 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-03 04:00:34,444 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,444 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:177, output treesize:150 [2021-11-03 04:00:34,449 INFO L180 QuantifierPusher]: treesize reduction 12, result has 94.6 percent of original size [2021-11-03 04:00:34,449 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:34,451 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:00:34,452 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:34,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 04:00:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:34,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,482 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:34,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:34,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-03 04:00:34,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:34,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:34,524 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,531 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:34,535 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,535 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:168 [2021-11-03 04:00:34,542 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.6 percent of original size [2021-11-03 04:00:34,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:34,563 INFO L180 QuantifierPusher]: treesize reduction 31, result has 85.5 percent of original size [2021-11-03 04:00:34,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:34,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:34,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-03 04:00:34,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:34,605 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-11-03 04:00:34,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:34,612 INFO L180 QuantifierPusher]: treesize reduction 10, result has 94.8 percent of original size [2021-11-03 04:00:34,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:34,624 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.0 percent of original size [2021-11-03 04:00:34,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:34,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 04:00:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:34,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,654 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:34,659 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,659 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:169, output treesize:163 [2021-11-03 04:00:34,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,665 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:34,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 04:00:34,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,682 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:34,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 04:00:34,693 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,704 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:34,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-11-03 04:00:34,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,713 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:34,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 04:00:34,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-03 04:00:34,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-03 04:00:34,735 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.0 percent of original size [2021-11-03 04:00:34,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:34,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 04:00:34,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:34,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:34,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:34,753 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:34,764 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:34,765 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:169, output treesize:163 [2021-11-03 04:00:34,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:34,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,985 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,993 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:34,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:34,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:34,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-03 04:00:35,009 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:35,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-11-03 04:00:35,090 INFO L180 QuantifierPusher]: treesize reduction 392, result has 70.2 percent of original size [2021-11-03 04:00:35,091 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,106 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:35,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 899 [2021-11-03 04:00:35,119 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,160 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:00:35,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 626 [2021-11-03 04:00:35,186 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:35,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:35,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:00:35,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 620 [2021-11-03 04:00:35,208 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:00:37,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:00:37,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:00:37,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-03 04:00:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585854682] [2021-11-03 04:00:37,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:37,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:37,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-11-03 04:00:37,951 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-03 04:00:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:38,496 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2021-11-03 04:00:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:00:38,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 21 [2021-11-03 04:00:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:38,498 INFO L225 Difference]: With dead ends: 166 [2021-11-03 04:00:38,498 INFO L226 Difference]: Without dead ends: 164 [2021-11-03 04:00:38,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:00:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-03 04:00:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2021-11-03 04:00:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 150 states have internal predecessors, (164), 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) [2021-11-03 04:00:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2021-11-03 04:00:38,503 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 21 [2021-11-03 04:00:38,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:38,503 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2021-11-03 04:00:38,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-03 04:00:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2021-11-03 04:00:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:00:38,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:38,504 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:38,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:38,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-03 04:00:38,720 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1787656354, now seen corresponding path program 2 times [2021-11-03 04:00:38,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:38,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925016993] [2021-11-03 04:00:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:38,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:38,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:38,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925016993] [2021-11-03 04:00:38,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925016993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:38,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360996380] [2021-11-03 04:00:38,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:00:38,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:38,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:38,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:38,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:00:39,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-03 04:00:39,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:00:39,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:00:39,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:39,022 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 [2021-11-03 04:00:39,041 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:00:39,041 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 21 treesize of output 20 [2021-11-03 04:00:39,076 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-03 04:00:39,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:39,166 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:00:39,166 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 24 treesize of output 10 [2021-11-03 04:00:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:39,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:39,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:00:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:39,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360996380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:00:39,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137328437] [2021-11-03 04:00:39,339 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-03 04:00:39,340 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:00:39,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:00:39,340 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:00:39,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:00:39,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,350 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-03 04:00:39,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 04:00:39,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 04:00:39,355 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_96|], 21=[|v_#valid_114|]} [2021-11-03 04:00:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-03 04:00:39,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:39,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:00:39,366 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 50 [2021-11-03 04:00:39,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:39,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:39,388 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-11-03 04:00:39,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,395 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:111 [2021-11-03 04:00:39,398 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-03 04:00:39,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:39,400 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:00:39,401 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:00:39,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-11-03 04:00:39,406 INFO L446 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_87|, |v_#memory_$Pointer$.base_90|], 6=[|v_#memory_int_65|]} [2021-11-03 04:00:39,412 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 [2021-11-03 04:00:39,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:39,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:39,416 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,426 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 [2021-11-03 04:00:39,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:39,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:00:39,427 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-03 04:00:39,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,441 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,446 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-11-03 04:00:39,448 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,449 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:155, output treesize:132 [2021-11-03 04:00:39,452 INFO L180 QuantifierPusher]: treesize reduction 12, result has 93.7 percent of original size [2021-11-03 04:00:39,453 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:39,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 04:00:39,459 INFO L446 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_88|, |v_#memory_$Pointer$.base_91|], 6=[|v_#memory_int_66|]} [2021-11-03 04:00:39,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:39,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,468 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 04:00:39,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,481 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,486 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:39,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,495 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-03 04:00:39,502 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,503 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:177, output treesize:150 [2021-11-03 04:00:39,508 INFO L180 QuantifierPusher]: treesize reduction 12, result has 94.6 percent of original size [2021-11-03 04:00:39,508 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:39,509 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:00:39,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 04:00:39,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-11-03 04:00:39,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:39,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,528 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-03 04:00:39,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:39,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:00:39,544 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:00:39,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,560 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:00:39,560 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:39,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,571 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:210, output treesize:168 [2021-11-03 04:00:39,577 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.6 percent of original size [2021-11-03 04:00:39,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:39,596 INFO L180 QuantifierPusher]: treesize reduction 31, result has 85.5 percent of original size [2021-11-03 04:00:39,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:39,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:00:39,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-03 04:00:39,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-03 04:00:39,643 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size [2021-11-03 04:00:39,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-11-03 04:00:39,650 INFO L180 QuantifierPusher]: treesize reduction 10, result has 94.8 percent of original size [2021-11-03 04:00:39,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:39,659 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.0 percent of original size [2021-11-03 04:00:39,660 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:39,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 04:00:39,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:39,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,676 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:39,685 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,685 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:169, output treesize:163 [2021-11-03 04:00:39,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,690 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:39,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-03 04:00:39,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,700 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:39,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 04:00:39,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:00:39,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-03 04:00:39,724 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:00:39,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-03 04:00:39,731 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:00:39,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-03 04:00:39,744 INFO L180 QuantifierPusher]: treesize reduction 9, result has 95.0 percent of original size [2021-11-03 04:00:39,745 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 04:00:39,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 04:00:39,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:00:39,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-03 04:00:39,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 04:00:39,761 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:00:39,770 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:00:39,770 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:169, output treesize:163 [2021-11-03 04:00:39,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:39,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:39,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-03 04:00:39,976 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:39,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:39,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:39,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-11-03 04:00:40,040 INFO L180 QuantifierPusher]: treesize reduction 392, result has 70.2 percent of original size [2021-11-03 04:00:40,042 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:40,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:40,055 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:40,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:40,068 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:40,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:40,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:40,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 899 [2021-11-03 04:00:40,112 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:40,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:40,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:40,142 INFO L185 QuantifierPusher]: treesize reduction 5, result has 99.5 percent of original size 975 [2021-11-03 04:00:40,170 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:00:40,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:40,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-03 04:00:40,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 980 [2021-11-03 04:00:40,196 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:00:43,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:00:43,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:00:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 10 [2021-11-03 04:00:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864329119] [2021-11-03 04:00:43,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:00:43,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:00:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:00:43,003 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2021-11-03 04:00:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:43,124 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2021-11-03 04:00:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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 26 [2021-11-03 04:00:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:43,126 INFO L225 Difference]: With dead ends: 146 [2021-11-03 04:00:43,126 INFO L226 Difference]: Without dead ends: 132 [2021-11-03 04:00:43,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2021-11-03 04:00:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-03 04:00:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-03 04:00:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 100 states have (on average 1.43) internal successors, (143), 131 states have internal predecessors, (143), 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) [2021-11-03 04:00:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2021-11-03 04:00:43,130 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 26 [2021-11-03 04:00:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:43,130 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2021-11-03 04:00:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2021-11-03 04:00:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2021-11-03 04:00:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:00:43,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:43,131 INFO L513 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] [2021-11-03 04:00:43,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:43,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:43,344 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash -516802388, now seen corresponding path program 1 times [2021-11-03 04:00:43,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:43,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729174920] [2021-11-03 04:00:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:43,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:43,391 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2021-11-03 04:00:43,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-03 04:00:43,398 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:197) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:296) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:00:43,400 INFO L168 Benchmark]: Toolchain (without parser) took 28084.84 ms. Allocated memory was 121.6 MB in the beginning and 318.8 MB in the end (delta: 197.1 MB). Free memory was 92.1 MB in the beginning and 235.7 MB in the end (delta: -143.5 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,401 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:00:43,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.25 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 110.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 146.8 MB. Free memory was 110.1 MB in the beginning and 107.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,401 INFO L168 Benchmark]: Boogie Preprocessor took 74.84 ms. Allocated memory is still 146.8 MB. Free memory was 107.7 MB in the beginning and 105.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,402 INFO L168 Benchmark]: RCFGBuilder took 961.60 ms. Allocated memory is still 146.8 MB. Free memory was 105.4 MB in the beginning and 116.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,402 INFO L168 Benchmark]: TraceAbstraction took 26418.32 ms. Allocated memory was 146.8 MB in the beginning and 318.8 MB in the end (delta: 172.0 MB). Free memory was 116.8 MB in the beginning and 235.7 MB in the end (delta: -118.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:43,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 121.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 568.25 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 91.8 MB in the beginning and 110.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 146.8 MB. Free memory was 110.1 MB in the beginning and 107.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.84 ms. Allocated memory is still 146.8 MB. Free memory was 107.7 MB in the beginning and 105.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 961.60 ms. Allocated memory is still 146.8 MB. Free memory was 105.4 MB in the beginning and 116.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26418.32 ms. Allocated memory was 146.8 MB in the beginning and 318.8 MB in the end (delta: 172.0 MB). Free memory was 116.8 MB in the beginning and 235.7 MB in the end (delta: -118.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-03 04:00:43,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:00:45,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:00:45,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:00:45,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:00:45,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:00:45,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:00:45,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:00:45,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:00:45,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:00:45,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:00:45,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:00:45,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:00:45,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:00:45,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:00:45,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:00:45,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:00:45,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:00:45,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:00:45,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:00:45,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:00:45,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:00:45,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:00:45,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:00:45,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:00:45,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:00:45,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:00:45,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:00:45,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:00:45,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:00:45,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:00:45,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:00:45,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:00:45,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:00:45,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:00:45,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:00:45,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:00:45,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:00:45,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:00:45,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:00:45,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:00:45,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:00:45,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:00:45,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:00:45,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:00:45,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:00:45,837 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:00:45,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:00:45,838 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:00:45,838 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:00:45,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:00:45,839 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:00:45,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:00:45,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:00:45,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:00:45,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:00:45,842 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:00:45,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:00:45,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:00:45,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:00:45,842 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:00:45,843 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:00:45,843 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:00:45,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:00:45,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:00:45,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:00:45,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:00:45,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:00:45,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:00:45,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:00:45,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:00:45,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:00:45,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:45,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:00:45,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:00:45,846 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:00:45,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:00:45,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:00:45,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:00:45,847 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 [2021-11-03 04:00:46,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:00:46,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:00:46,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:00:46,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:00:46,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:00:46,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-11-03 04:00:46,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/cfe25ec95/a510024cde74472a9f8f249e17c0cb65/FLAGd7e092f73 [2021-11-03 04:00:47,017 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:00:47,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-11-03 04:00:47,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/cfe25ec95/a510024cde74472a9f8f249e17c0cb65/FLAGd7e092f73 [2021-11-03 04:00:47,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/data/cfe25ec95/a510024cde74472a9f8f249e17c0cb65 [2021-11-03 04:00:47,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:00:47,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:00:47,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:47,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:00:47,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:00:47,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:47,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7bb532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47, skipping insertion in model container [2021-11-03 04:00:47,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:47,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:00:47,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:00:47,747 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-11-03 04:00:47,753 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-11-03 04:00:47,755 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-11-03 04:00:47,757 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-11-03 04:00:47,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-11-03 04:00:47,760 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-11-03 04:00:47,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-11-03 04:00:47,764 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-11-03 04:00:47,765 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-11-03 04:00:47,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-11-03 04:00:47,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-11-03 04:00:47,773 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-11-03 04:00:47,775 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-11-03 04:00:47,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-11-03 04:00:47,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:47,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:00:47,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-11-03 04:00:47,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-11-03 04:00:47,865 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-11-03 04:00:47,870 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-11-03 04:00:47,872 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-11-03 04:00:47,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-11-03 04:00:47,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-11-03 04:00:47,878 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-11-03 04:00:47,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-11-03 04:00:47,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-11-03 04:00:47,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-11-03 04:00:47,883 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-11-03 04:00:47,885 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-11-03 04:00:47,888 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-11-03 04:00:47,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:47,937 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:00:47,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47 WrapperNode [2021-11-03 04:00:47,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:47,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:47,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:00:47,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:00:47,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:47,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:48,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:00:48,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:00:48,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:00:48,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:00:48,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:00:48,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:00:48,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:00:48,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (1/1) ... [2021-11-03 04:00:48,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:48,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:48,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:00:48,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:00:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:00:48,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:00:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:00:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:00:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:00:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:00:48,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:00:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:00:48,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:00:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:00:49,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:00:49,061 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-11-03 04:00:49,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:49 BoogieIcfgContainer [2021-11-03 04:00:49,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:00:49,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:00:49,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:00:49,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:00:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:47" (1/3) ... [2021-11-03 04:00:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de867d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:49, skipping insertion in model container [2021-11-03 04:00:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:47" (2/3) ... [2021-11-03 04:00:49,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de867d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:49, skipping insertion in model container [2021-11-03 04:00:49,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:49" (3/3) ... [2021-11-03 04:00:49,070 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-11-03 04:00:49,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:00:49,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-03 04:00:49,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:00:49,123 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 [2021-11-03 04:00:49,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-03 04:00:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 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) [2021-11-03 04:00:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:00:49,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:49,146 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:00:49,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:49,151 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 04:00:49,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:49,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475276750] [2021-11-03 04:00:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:49,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:49,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:49,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:00:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:49,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:49,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:49,306 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 [2021-11-03 04:00:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:49,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:49,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:49,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475276750] [2021-11-03 04:00:49,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475276750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:49,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:49,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:00:49,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082423698] [2021-11-03 04:00:49,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:49,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:49,368 INFO L87 Difference]: Start difference. First operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 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) [2021-11-03 04:00:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:49,726 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2021-11-03 04:00:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:49,728 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 [2021-11-03 04:00:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:49,739 INFO L225 Difference]: With dead ends: 175 [2021-11-03 04:00:49,739 INFO L226 Difference]: Without dead ends: 171 [2021-11-03 04:00:49,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-03 04:00:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-11-03 04:00:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 166 states have internal predecessors, (178), 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) [2021-11-03 04:00:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2021-11-03 04:00:49,828 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 3 [2021-11-03 04:00:49,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:49,829 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2021-11-03 04:00:49,829 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) [2021-11-03 04:00:49,830 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2021-11-03 04:00:49,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:00:49,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:49,831 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:00:49,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:50,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:50,041 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 04:00:50,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:50,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095422914] [2021-11-03 04:00:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:50,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:50,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:50,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:50,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:00:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:50,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:00:50,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:50,124 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 [2021-11-03 04:00:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:50,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:50,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095422914] [2021-11-03 04:00:50,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095422914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:50,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:50,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:00:50,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989027364] [2021-11-03 04:00:50,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:50,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:50,211 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:00:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:50,553 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-11-03 04:00:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 [2021-11-03 04:00:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:50,557 INFO L225 Difference]: With dead ends: 160 [2021-11-03 04:00:50,557 INFO L226 Difference]: Without dead ends: 160 [2021-11-03 04:00:50,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-03 04:00:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-11-03 04:00:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 155 states have internal predecessors, (166), 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) [2021-11-03 04:00:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-11-03 04:00:50,596 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 3 [2021-11-03 04:00:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:50,596 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-11-03 04:00:50,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-03 04:00:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-11-03 04:00:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:00:50,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:50,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:50,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:50,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:50,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 59261803, now seen corresponding path program 1 times [2021-11-03 04:00:50,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:50,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990070491] [2021-11-03 04:00:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:50,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:50,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:50,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:00:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:00:50,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:50,951 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 [2021-11-03 04:00:51,041 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:00:51,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-03 04:00:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:51,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:51,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:51,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990070491] [2021-11-03 04:00:51,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990070491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:51,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:51,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:51,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388900817] [2021-11-03 04:00:51,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:51,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:51,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:00:51,151 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-03 04:00:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:51,484 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-11-03 04:00:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:00:51,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-03 04:00:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:51,487 INFO L225 Difference]: With dead ends: 165 [2021-11-03 04:00:51,487 INFO L226 Difference]: Without dead ends: 165 [2021-11-03 04:00:51,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-03 04:00:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-11-03 04:00:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 156 states have internal predecessors, (171), 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) [2021-11-03 04:00:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2021-11-03 04:00:51,500 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 8 [2021-11-03 04:00:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:51,501 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2021-11-03 04:00:51,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-03 04:00:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2021-11-03 04:00:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:00:51,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:51,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:51,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:51,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:51,712 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:00:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash 59261804, now seen corresponding path program 1 times [2021-11-03 04:00:51,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:51,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510441381] [2021-11-03 04:00:51,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:51,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:51,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:51,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:00:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:51,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:00:51,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:51,811 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 [2021-11-03 04:00:51,817 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 [2021-11-03 04:00:51,958 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:00:51,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-03 04:00:51,971 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:00:51,972 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 25 treesize of output 25 [2021-11-03 04:00:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:52,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:55,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:55,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510441381] [2021-11-03 04:00:55,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510441381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:55,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:55,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:00:55,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248791055] [2021-11-03 04:00:55,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:00:55,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:00:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-03 04:00:55,095 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-03 04:01:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:07,115 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2021-11-03 04:01:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:01:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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 8 [2021-11-03 04:01:07,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:07,119 INFO L225 Difference]: With dead ends: 249 [2021-11-03 04:01:07,119 INFO L226 Difference]: Without dead ends: 249 [2021-11-03 04:01:07,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=51, Invalid=79, Unknown=2, NotChecked=0, Total=132 [2021-11-03 04:01:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-03 04:01:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 154. [2021-11-03 04:01:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 109 states have (on average 1.5321100917431192) internal successors, (167), 153 states have internal predecessors, (167), 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) [2021-11-03 04:01:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions. [2021-11-03 04:01:07,131 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 8 [2021-11-03 04:01:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:07,131 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 167 transitions. [2021-11-03 04:01:07,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-11-03 04:01:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2021-11-03 04:01:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:01:07,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:07,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:07,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:07,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:07,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:07,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1837116747, now seen corresponding path program 1 times [2021-11-03 04:01:07,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:07,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126538843] [2021-11-03 04:01:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:07,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:07,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:07,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:07,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:01:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:07,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:01:07,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:07,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:07,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:07,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126538843] [2021-11-03 04:01:07,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126538843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:07,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:07,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:01:07,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969489402] [2021-11-03 04:01:07,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:01:07,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:01:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:07,532 INFO L87 Difference]: Start difference. First operand 154 states and 167 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-03 04:01:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:07,634 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-11-03 04:01:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2021-11-03 04:01:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:07,637 INFO L225 Difference]: With dead ends: 144 [2021-11-03 04:01:07,637 INFO L226 Difference]: Without dead ends: 144 [2021-11-03 04:01:07,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-03 04:01:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-11-03 04:01:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.5) internal successors, (156), 143 states have internal predecessors, (156), 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) [2021-11-03 04:01:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2021-11-03 04:01:07,651 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 9 [2021-11-03 04:01:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:07,653 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2021-11-03 04:01:07,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-03 04:01:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2021-11-03 04:01:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:01:07,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:07,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:07,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:07,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:07,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash 236809587, now seen corresponding path program 1 times [2021-11-03 04:01:07,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:07,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72117010] [2021-11-03 04:01:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:07,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:07,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:07,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:07,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:01:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:07,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:01:07,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:07,974 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 [2021-11-03 04:01:07,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-03 04:01:08,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-03 04:01:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:08,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:08,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:08,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72117010] [2021-11-03 04:01:08,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72117010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:08,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:08,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:01:08,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131324717] [2021-11-03 04:01:08,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:01:08,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:01:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:01:08,089 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2021-11-03 04:01:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:08,537 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-11-03 04:01:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:01:08,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 [2021-11-03 04:01:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:08,539 INFO L225 Difference]: With dead ends: 143 [2021-11-03 04:01:08,539 INFO L226 Difference]: Without dead ends: 143 [2021-11-03 04:01:08,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:01:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-03 04:01:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-03 04:01:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.4903846153846154) internal successors, (155), 142 states have internal predecessors, (155), 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) [2021-11-03 04:01:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2021-11-03 04:01:08,546 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 11 [2021-11-03 04:01:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:08,547 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2021-11-03 04:01:08,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2021-11-03 04:01:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2021-11-03 04:01:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:01:08,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:08,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:08,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:08,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:08,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:08,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash 236809588, now seen corresponding path program 1 times [2021-11-03 04:01:08,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:08,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251971605] [2021-11-03 04:01:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:08,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:08,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:08,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:01:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:08,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:01:08,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:08,885 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 [2021-11-03 04:01:08,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-03 04:01:08,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-03 04:01:08,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-03 04:01:09,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-03 04:01:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:09,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:09,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:09,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251971605] [2021-11-03 04:01:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251971605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:09,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:09,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:01:09,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921051591] [2021-11-03 04:01:09,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:01:09,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:01:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:01:09,272 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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) [2021-11-03 04:01:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:10,281 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-11-03 04:01:10,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:01:10,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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 [2021-11-03 04:01:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:10,283 INFO L225 Difference]: With dead ends: 142 [2021-11-03 04:01:10,283 INFO L226 Difference]: Without dead ends: 142 [2021-11-03 04:01:10,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:01:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-03 04:01:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-03 04:01:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 141 states have internal predecessors, (154), 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) [2021-11-03 04:01:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2021-11-03 04:01:10,288 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 11 [2021-11-03 04:01:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:10,289 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2021-11-03 04:01:10,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-03 04:01:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2021-11-03 04:01:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:01:10,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:10,291 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:10,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:10,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:10,496 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash 845693984, now seen corresponding path program 1 times [2021-11-03 04:01:10,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:10,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575436638] [2021-11-03 04:01:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:10,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:10,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:10,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:01:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:10,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:01:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:10,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:10,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:10,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575436638] [2021-11-03 04:01:10,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575436638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:10,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:10,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:01:10,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690234527] [2021-11-03 04:01:10,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:10,696 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-03 04:01:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:10,762 INFO L93 Difference]: Finished difference Result 263 states and 290 transitions. [2021-11-03 04:01:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:01:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15 [2021-11-03 04:01:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:10,764 INFO L225 Difference]: With dead ends: 263 [2021-11-03 04:01:10,764 INFO L226 Difference]: Without dead ends: 263 [2021-11-03 04:01:10,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-03 04:01:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 175. [2021-11-03 04:01:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.4233576642335766) internal successors, (195), 174 states have internal predecessors, (195), 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) [2021-11-03 04:01:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2021-11-03 04:01:10,770 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 15 [2021-11-03 04:01:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:10,770 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2021-11-03 04:01:10,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-03 04:01:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2021-11-03 04:01:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:01:10,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:10,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:10,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:10,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:10,983 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053835, now seen corresponding path program 1 times [2021-11-03 04:01:10,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:10,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366259382] [2021-11-03 04:01:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:10,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:10,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:10,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:01:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:11,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:01:11,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:11,117 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 [2021-11-03 04:01:11,199 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 04:01:11,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-03 04:01:11,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-03 04:01:11,472 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:01:11,473 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 42 treesize of output 32 [2021-11-03 04:01:11,612 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-03 04:01:11,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-03 04:01:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:11,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:13,895 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)))))) (_ bv1 1)))) is different from false [2021-11-03 04:01:15,901 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base))) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)))))) (_ bv1 1)))) is different from false [2021-11-03 04:01:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:15,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:15,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366259382] [2021-11-03 04:01:15,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366259382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:15,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:15,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2021-11-03 04:01:15,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601644189] [2021-11-03 04:01:15,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 04:01:15,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 04:01:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=119, Unknown=2, NotChecked=46, Total=210 [2021-11-03 04:01:15,987 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 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) [2021-11-03 04:01:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:17,882 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2021-11-03 04:01:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:01:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 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 15 [2021-11-03 04:01:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:17,885 INFO L225 Difference]: With dead ends: 180 [2021-11-03 04:01:17,885 INFO L226 Difference]: Without dead ends: 180 [2021-11-03 04:01:17,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=134, Invalid=334, Unknown=2, NotChecked=82, Total=552 [2021-11-03 04:01:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-03 04:01:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2021-11-03 04:01:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 173 states have internal predecessors, (192), 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) [2021-11-03 04:01:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 192 transitions. [2021-11-03 04:01:17,891 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 192 transitions. Word has length 15 [2021-11-03 04:01:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:17,891 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 192 transitions. [2021-11-03 04:01:17,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 15 states have internal predecessors, (29), 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) [2021-11-03 04:01:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 192 transitions. [2021-11-03 04:01:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:01:17,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:17,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:17,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:01:18,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:18,103 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053834, now seen corresponding path program 1 times [2021-11-03 04:01:18,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:18,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696585552] [2021-11-03 04:01:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:18,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:18,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:18,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:18,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:01:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:18,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:01:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:18,301 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 [2021-11-03 04:01:18,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:01:18,363 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 17 treesize of output 17 [2021-11-03 04:01:18,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-03 04:01:18,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-03 04:01:18,423 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 [2021-11-03 04:01:18,569 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:01:18,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-03 04:01:18,597 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-03 04:01:18,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-11-03 04:01:18,731 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-03 04:01:18,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-03 04:01:18,739 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-03 04:01:18,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-11-03 04:01:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:18,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:32,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:01:32,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:01:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:32,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:32,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696585552] [2021-11-03 04:01:32,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696585552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:32,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:32,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-03 04:01:32,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611551854] [2021-11-03 04:01:32,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:01:32,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:01:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=195, Unknown=2, NotChecked=0, Total=240 [2021-11-03 04:01:32,391 INFO L87 Difference]: Start difference. First operand 174 states and 192 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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) [2021-11-03 04:01:49,744 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (and (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) .cse0 c_ULTIMATE.start_main_~item~0.offset)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) .cse0 c_ULTIMATE.start_main_~item~0.base)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))))) (= (select |c_#length| c_ULTIMATE.start_main_~item~0.base) (_ bv12 32)) (= c_ULTIMATE.start_main_~item~0.offset (_ bv0 32)) (exists ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)) (.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|))) (and (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_ULTIMATE.start_main_~item~0.offset) (= c_ULTIMATE.start_main_~item~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2))))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.offset)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~item~0.base))) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~head~0.base))) (_ bv1 1))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= c_ULTIMATE.start_main_~item~0.base .cse4)))) is different from false [2021-11-03 04:01:55,887 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (and (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) .cse0 c_ULTIMATE.start_main_~item~0.offset)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) .cse0 c_ULTIMATE.start_main_~item~0.base)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))))) (= (select |c_#length| c_ULTIMATE.start_main_~item~0.base) (_ bv12 32)) (= c_ULTIMATE.start_main_~item~0.offset (_ bv0 32)) (exists ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)) (.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|))) (and (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_ULTIMATE.start_main_~item~0.offset) (= c_ULTIMATE.start_main_~item~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2))))) (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.offset)) c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (select (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset) (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| c_ULTIMATE.start_main_~item~0.base))) (_ bv1 1))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= c_ULTIMATE.start_main_~item~0.base .cse4)))) is different from false [2021-11-03 04:01:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:56,151 INFO L93 Difference]: Finished difference Result 206 states and 223 transitions. [2021-11-03 04:01:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 04:01:56,152 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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 15 [2021-11-03 04:01:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:56,153 INFO L225 Difference]: With dead ends: 206 [2021-11-03 04:01:56,153 INFO L226 Difference]: Without dead ends: 206 [2021-11-03 04:01:56,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=330, Invalid=1078, Unknown=6, NotChecked=146, Total=1560 [2021-11-03 04:01:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-03 04:01:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2021-11-03 04:01:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 169 states have internal predecessors, (186), 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) [2021-11-03 04:01:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2021-11-03 04:01:56,159 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 15 [2021-11-03 04:01:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:56,160 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2021-11-03 04:01:56,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 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) [2021-11-03 04:01:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2021-11-03 04:01:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:01:56,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:56,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:56,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:56,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:56,364 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1512275769, now seen corresponding path program 1 times [2021-11-03 04:01:56,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:56,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989532628] [2021-11-03 04:01:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:56,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:56,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:56,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:56,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:01:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:56,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:56,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:56,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:56,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989532628] [2021-11-03 04:01:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989532628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:56,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:56,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:01:56,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629800444] [2021-11-03 04:01:56,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:56,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:56,617 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-03 04:01:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:56,683 INFO L93 Difference]: Finished difference Result 201 states and 218 transitions. [2021-11-03 04:01:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:01:56,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-11-03 04:01:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:56,685 INFO L225 Difference]: With dead ends: 201 [2021-11-03 04:01:56,685 INFO L226 Difference]: Without dead ends: 201 [2021-11-03 04:01:56,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:01:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-03 04:01:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 179. [2021-11-03 04:01:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3493150684931507) internal successors, (197), 178 states have internal predecessors, (197), 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) [2021-11-03 04:01:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2021-11-03 04:01:56,690 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 18 [2021-11-03 04:01:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:56,691 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2021-11-03 04:01:56,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-03 04:01:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2021-11-03 04:01:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:01:56,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:56,692 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:56,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:56,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:56,902 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1578871877, now seen corresponding path program 1 times [2021-11-03 04:01:56,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:56,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145515535] [2021-11-03 04:01:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:56,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:56,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:56,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:01:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:01:57,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:57,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:57,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:57,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145515535] [2021-11-03 04:01:57,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145515535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:57,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:57,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-03 04:01:57,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903751195] [2021-11-03 04:01:57,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:01:57,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:01:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:01:57,380 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-11-03 04:01:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:57,849 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2021-11-03 04:01:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:01:57,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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 20 [2021-11-03 04:01:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:57,851 INFO L225 Difference]: With dead ends: 183 [2021-11-03 04:01:57,851 INFO L226 Difference]: Without dead ends: 183 [2021-11-03 04:01:57,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:01:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-03 04:01:57,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2021-11-03 04:01:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 178 states have internal predecessors, (196), 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) [2021-11-03 04:01:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2021-11-03 04:01:57,857 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 20 [2021-11-03 04:01:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:57,857 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2021-11-03 04:01:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-11-03 04:01:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2021-11-03 04:01:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:01:57,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:57,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:57,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:58,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:58,069 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1598030539, now seen corresponding path program 1 times [2021-11-03 04:01:58,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:58,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979465920] [2021-11-03 04:01:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:58,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:58,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:58,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:58,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:01:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:58,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:01:58,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:58,258 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 [2021-11-03 04:01:58,289 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 [2021-11-03 04:01:58,349 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:01:58,350 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 21 treesize of output 20 [2021-11-03 04:01:58,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:01:58,370 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 21 treesize of output 20 [2021-11-03 04:01:58,465 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-03 04:01:58,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:01:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:01:58,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:01:58,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:01:58,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:01:58,704 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:01:58,704 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 47 treesize of output 33 [2021-11-03 04:01:58,715 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:01:58,715 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 27 treesize of output 13 [2021-11-03 04:01:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:58,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:58,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:01:58,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:01:58,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:01:58,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:01:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:58,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:58,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979465920] [2021-11-03 04:01:58,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979465920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:58,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:58,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-11-03 04:01:58,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238497074] [2021-11-03 04:01:58,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:01:58,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:01:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:01:58,969 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-11-03 04:01:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:59,288 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2021-11-03 04:01:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:01:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 20 [2021-11-03 04:01:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:59,292 INFO L225 Difference]: With dead ends: 176 [2021-11-03 04:01:59,292 INFO L226 Difference]: Without dead ends: 176 [2021-11-03 04:01:59,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:01:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-03 04:01:59,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2021-11-03 04:01:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 140 states have (on average 1.3357142857142856) internal successors, (187), 172 states have internal predecessors, (187), 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) [2021-11-03 04:01:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2021-11-03 04:01:59,297 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 20 [2021-11-03 04:01:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:59,298 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2021-11-03 04:01:59,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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) [2021-11-03 04:01:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2021-11-03 04:01:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:01:59,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:59,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:59,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:01:59,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:59,510 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:01:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash -279759618, now seen corresponding path program 1 times [2021-11-03 04:01:59,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:59,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246947594] [2021-11-03 04:01:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:59,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:59,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:59,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:01:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:59,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:01:59,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:59,771 INFO L354 Elim1Store]: treesize reduction 41, result has 25.5 percent of original size [2021-11-03 04:01:59,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 27 [2021-11-03 04:01:59,851 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 04:01:59,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 35 [2021-11-03 04:01:59,961 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 04:01:59,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 36 [2021-11-03 04:02:00,073 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 04:02:00,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2021-11-03 04:02:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:00,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:00,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:00,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246947594] [2021-11-03 04:02:00,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246947594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:00,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:00,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:02:00,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786640942] [2021-11-03 04:02:00,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:02:00,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:02:00,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:02:00,265 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-03 04:02:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:00,590 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2021-11-03 04:02:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:02:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 22 [2021-11-03 04:02:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:00,591 INFO L225 Difference]: With dead ends: 172 [2021-11-03 04:02:00,591 INFO L226 Difference]: Without dead ends: 172 [2021-11-03 04:02:00,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:02:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-03 04:02:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2021-11-03 04:02:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 139 states have (on average 1.3237410071942446) internal successors, (184), 170 states have internal predecessors, (184), 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) [2021-11-03 04:02:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 184 transitions. [2021-11-03 04:02:00,596 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 184 transitions. Word has length 22 [2021-11-03 04:02:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:00,596 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 184 transitions. [2021-11-03 04:02:00,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-03 04:02:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 184 transitions. [2021-11-03 04:02:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:02:00,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:00,597 INFO L513 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] [2021-11-03 04:02:00,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:00,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:00,798 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:02:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1985676737, now seen corresponding path program 1 times [2021-11-03 04:02:00,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:00,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586540283] [2021-11-03 04:02:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:00,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:00,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:00,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:02:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:00,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:02:00,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:00,996 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 [2021-11-03 04:02:01,005 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 [2021-11-03 04:02:01,066 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:02:01,066 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 21 treesize of output 20 [2021-11-03 04:02:01,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:01,086 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 21 treesize of output 20 [2021-11-03 04:02:01,181 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-03 04:02:01,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:01,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:01,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:01,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:01,511 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:02:01,511 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 47 treesize of output 33 [2021-11-03 04:02:01,517 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:02:01,517 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 27 treesize of output 13 [2021-11-03 04:02:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:01,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:01,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:01,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:02:01,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:01,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:02:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:01,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:01,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586540283] [2021-11-03 04:02:01,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586540283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:01,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [167728401] [2021-11-03 04:02:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:01,882 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:02:01,889 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:02:01,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:02:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:02,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:02:02,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:02,252 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 [2021-11-03 04:02:02,264 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 [2021-11-03 04:02:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,313 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 21 treesize of output 20 [2021-11-03 04:02:02,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,327 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 21 treesize of output 20 [2021-11-03 04:02:02,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,385 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:02,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:02,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:02,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:02,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:02,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-11-03 04:02:02,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:02,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-11-03 04:02:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:02,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:02,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:02,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:02:02,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:02,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:02:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:03,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [167728401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:03,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529551321] [2021-11-03 04:02:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:03,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:03,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:02:03,011 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:02:03,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:02:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:03,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:02:03,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:03,287 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 [2021-11-03 04:02:03,293 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 [2021-11-03 04:02:03,324 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:02:03,324 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 21 treesize of output 20 [2021-11-03 04:02:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:03,341 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 21 treesize of output 20 [2021-11-03 04:02:03,392 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-03 04:02:03,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:03,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:03,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:02:03,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:02:03,747 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:02:03,747 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 47 treesize of output 33 [2021-11-03 04:02:03,752 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 04:02:03,752 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 27 treesize of output 13 [2021-11-03 04:02:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:03,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:04,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:04,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 04:02:04,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:04,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:02:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:04,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529551321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:04,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:02:04,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7, 5, 7, 5] total 10 [2021-11-03 04:02:04,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93423581] [2021-11-03 04:02:04,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:02:04,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:04,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:02:04,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:02:04,051 INFO L87 Difference]: Start difference. First operand 171 states and 184 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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) [2021-11-03 04:02:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:04,509 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions. [2021-11-03 04:02:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:02:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 23 [2021-11-03 04:02:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:04,511 INFO L225 Difference]: With dead ends: 178 [2021-11-03 04:02:04,511 INFO L226 Difference]: Without dead ends: 178 [2021-11-03 04:02:04,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:02:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-03 04:02:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-03 04:02:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 177 states have internal predecessors, (191), 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) [2021-11-03 04:02:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2021-11-03 04:02:04,516 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 23 [2021-11-03 04:02:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:04,516 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2021-11-03 04:02:04,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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) [2021-11-03 04:02:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2021-11-03 04:02:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 04:02:04,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:04,518 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:04,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:04,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:04,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:05,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:05,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:02:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1426435580, now seen corresponding path program 1 times [2021-11-03 04:02:05,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:05,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895815012] [2021-11-03 04:02:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:05,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:05,120 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:05,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:02:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:02:05,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:05,433 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-03 04:02:05,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-03 04:02:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:08,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:08,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:08,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895815012] [2021-11-03 04:02:08,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895815012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:08,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1520150163] [2021-11-03 04:02:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:08,546 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:02:08,547 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:02:08,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:02:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:09,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:02:09,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:09,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:09,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1520150163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:09,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357065839] [2021-11-03 04:02:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:09,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:09,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:02:09,365 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:02:09,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:02:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:09,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:02:09,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:09,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:10,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357065839] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:10,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:02:10,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 11 [2021-11-03 04:02:10,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415077444] [2021-11-03 04:02:10,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:02:10,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:02:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:02:10,098 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-03 04:02:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:11,333 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2021-11-03 04:02:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:02:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 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 24 [2021-11-03 04:02:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:11,345 INFO L225 Difference]: With dead ends: 180 [2021-11-03 04:02:11,345 INFO L226 Difference]: Without dead ends: 163 [2021-11-03 04:02:11,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:02:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-03 04:02:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-03 04:02:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.3358778625954197) internal successors, (175), 162 states have internal predecessors, (175), 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) [2021-11-03 04:02:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2021-11-03 04:02:11,350 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 24 [2021-11-03 04:02:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:11,350 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2021-11-03 04:02:11,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-03 04:02:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2021-11-03 04:02:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:02:11,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:11,352 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:11,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:11,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:11,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:11,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:11,968 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:02:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash -815352664, now seen corresponding path program 1 times [2021-11-03 04:02:11,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:11,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574643978] [2021-11-03 04:02:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:11,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:11,970 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:11,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:02:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 04:02:12,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:12,359 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 [2021-11-03 04:02:12,422 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:02:12,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-03 04:02:12,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-03 04:02:12,609 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:02:12,610 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 28 [2021-11-03 04:02:12,863 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-03 04:02:12,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2021-11-03 04:02:12,980 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-03 04:02:12,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-03 04:02:13,182 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 04:02:13,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-03 04:02:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:13,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:13,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:13,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:02:28,192 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_82 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) v_ULTIMATE.start_main_~item~0.offset_82 (_ bv0 32)) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~item~0.offset_82) v_DerPreprocessor_9))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-03 04:02:30,215 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_82 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_ULTIMATE.start_main_~item~0.offset_82 (_ bv0 32)) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~item~0.offset_82) v_DerPreprocessor_9)))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-03 04:02:32,240 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~item~0.offset_82 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_ULTIMATE.start_main_~item~0.offset_82 (_ bv0 32)) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~item~0.offset_82) v_DerPreprocessor_9)))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-03 04:02:32,265 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 6120 treesize of output 6088 [2021-11-03 04:02:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:33,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:33,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574643978] [2021-11-03 04:02:33,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574643978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:33,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450216166] [2021-11-03 04:02:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:33,279 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:33,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:02:33,280 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:02:33,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:02:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:02:33,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:33,871 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 [2021-11-03 04:02:34,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:02:34,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-03 04:02:34,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-03 04:02:34,530 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:02:34,531 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 28 [2021-11-03 04:02:35,006 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-03 04:02:35,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2021-11-03 04:02:35,208 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-03 04:02:35,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-03 04:02:35,559 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 04:02:35,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-03 04:02:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:35,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:35,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:02:35,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:02:41,911 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_86 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_ULTIMATE.start_main_~item~0.offset_86 (_ bv0 32)) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~item~0.offset_86) v_DerPreprocessor_9)))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-03 04:03:06,427 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 6176 treesize of output 6144 [2021-11-03 04:03:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:07,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1450216166] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:03:07,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246350588] [2021-11-03 04:03:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:07,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:03:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:03:07,323 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:03:07,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 04:03:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:07,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:03:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:07,894 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 [2021-11-03 04:03:07,970 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:03:07,971 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 15 treesize of output 15 [2021-11-03 04:03:08,085 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 16 treesize of output 12 [2021-11-03 04:03:10,314 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:03:10,315 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 30 treesize of output 24 [2021-11-03 04:03:10,746 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-03 04:03:10,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 43 [2021-11-03 04:03:10,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:03:10,768 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 19 treesize of output 18 [2021-11-03 04:03:10,928 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-03 04:03:10,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 25 [2021-11-03 04:03:10,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:03:10,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-03 04:03:11,557 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-03 04:03:11,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 45 [2021-11-03 04:03:11,564 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 04:03:11,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-03 04:03:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:11,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:12,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:03:12,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:03:12,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:03:12,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 04:03:16,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:03:16,873 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 335 treesize of output 270 [2021-11-03 04:03:22,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_102 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base)))) (let ((.cse0 (select (select .cse3 c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset)) (.cse2 (bvadd v_arrayElimCell_102 (_ bv8 32)))) (or (and (= .cse0 (_ bv0 32)) (= v_arrayElimCell_102 (_ bv0 32))) (let ((.cse1 (not (= .cse0 c_ULTIMATE.start_main_~head~0.base)))) (and (= c_ULTIMATE.start_main_~head~0.offset c_ULTIMATE.start_main_~item~0.offset) (= c_ULTIMATE.start_main_~item~0.base c_ULTIMATE.start_main_~head~0.base) (or .cse1 (not (= c_ULTIMATE.start_main_~head~0.offset .cse2))) (or .cse1 (not (= c_ULTIMATE.start_main_~head~0.offset v_arrayElimCell_102))))) (not (= (_ bv0 32) (select (select (store .cse3 .cse0 (store (store (select .cse3 .cse0) v_arrayElimCell_102 (_ bv0 32)) .cse2 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))))))) is different from false [2021-11-03 04:03:47,704 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 6264 treesize of output 6232 [2021-11-03 04:03:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:53,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246350588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:03:53,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:03:53,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 14] total 53 [2021-11-03 04:03:53,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446019388] [2021-11-03 04:03:53,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-03 04:03:53,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-03 04:03:53,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1950, Unknown=34, NotChecked=480, Total=2756 [2021-11-03 04:03:53,815 INFO L87 Difference]: Start difference. First operand 163 states and 175 transitions. Second operand has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 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) [2021-11-03 04:04:46,101 WARN L207 SmtUtils]: Spent 22.69 s on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2021-11-03 04:05:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:11,673 INFO L93 Difference]: Finished difference Result 207 states and 227 transitions. [2021-11-03 04:05:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:05:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 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 [2021-11-03 04:05:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:11,675 INFO L225 Difference]: With dead ends: 207 [2021-11-03 04:05:11,676 INFO L226 Difference]: Without dead ends: 207 [2021-11-03 04:05:11,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 123.8s TimeCoverageRelationStatistics Valid=533, Invalid=2874, Unknown=35, NotChecked=590, Total=4032 [2021-11-03 04:05:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-03 04:05:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2021-11-03 04:05:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 176 states have internal predecessors, (191), 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) [2021-11-03 04:05:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2021-11-03 04:05:11,684 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 31 [2021-11-03 04:05:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:11,684 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2021-11-03 04:05:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 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) [2021-11-03 04:05:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2021-11-03 04:05:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 04:05:11,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:11,686 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:11,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-03 04:05:11,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-03 04:05:12,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:12,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:05:12,302 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:05:12,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1649213984, now seen corresponding path program 1 times [2021-11-03 04:05:12,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:12,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079724370] [2021-11-03 04:05:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:12,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:12,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:12,304 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:12,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:05:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:13,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:05:13,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:13,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:13,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:05:13,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079724370] [2021-11-03 04:05:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079724370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:05:13,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:05:13,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:05:13,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109542215] [2021-11-03 04:05:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:05:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:05:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:05:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:05:13,213 INFO L87 Difference]: Start difference. First operand 177 states and 191 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) [2021-11-03 04:05:13,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:13,251 INFO L93 Difference]: Finished difference Result 219 states and 232 transitions. [2021-11-03 04:05:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:05:13,251 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 32 [2021-11-03 04:05:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:13,253 INFO L225 Difference]: With dead ends: 219 [2021-11-03 04:05:13,253 INFO L226 Difference]: Without dead ends: 219 [2021-11-03 04:05:13,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:05:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-03 04:05:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 179. [2021-11-03 04:05:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 147 states have (on average 1.2857142857142858) internal successors, (189), 178 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) [2021-11-03 04:05:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 189 transitions. [2021-11-03 04:05:13,258 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 189 transitions. Word has length 32 [2021-11-03 04:05:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:13,258 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 189 transitions. [2021-11-03 04:05:13,259 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) [2021-11-03 04:05:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 189 transitions. [2021-11-03 04:05:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:05:13,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:13,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:13,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:13,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:13,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-03 04:05:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1932608206, now seen corresponding path program 1 times [2021-11-03 04:05:13,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:13,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6894396] [2021-11-03 04:05:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:13,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:13,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:13,475 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:13,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e772c75-a2bb-4856-9534-f80fb3afb1e3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 04:05:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:14,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:05:14,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:14,231 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 [2021-11-03 04:05:14,329 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 04:05:14,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-03 04:05:14,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-03 04:05:14,660 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:05:14,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-11-03 04:05:15,131 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-03 04:05:15,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52 [2021-11-03 04:05:15,327 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-03 04:05:15,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 51 [2021-11-03 04:05:15,917 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 04:05:15,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 48 [2021-11-03 04:05:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:16,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:16,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:05:16,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-03 04:05:20,600 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~item~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~item~0.base) ULTIMATE.start_main_~item~0.offset (_ bv0 32)) (bvadd (_ bv8 32) ULTIMATE.start_main_~item~0.offset) v_DerPreprocessor_13)) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))))) (_ bv1 1)))) is different from false [2021-11-03 04:05:32,583 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem6.offset| (_ BitVec 32)) (v_ULTIMATE.start_main_~item~0.offset_94 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem6.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem6.offset|) c_ULTIMATE.start_main_~item~0.base)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~item~0.base) c_ULTIMATE.start_main_~item~0.offset))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_ULTIMATE.start_main_~item~0.offset_94 (_ bv0 32)) (bvadd (_ bv8 32) v_ULTIMATE.start_main_~item~0.offset_94) v_DerPreprocessor_13)))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))))))))))) is different from false [2021-11-03 04:05:50,981 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 8408 treesize of output 8376