./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:42:35,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:42:35,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:42:35,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:42:35,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:42:35,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:42:35,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:42:35,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:42:35,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:42:35,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:42:35,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:42:35,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:42:35,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:42:35,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:42:35,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:42:35,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:42:35,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:42:35,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:42:35,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:42:36,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:42:36,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:42:36,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:42:36,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:42:36,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:42:36,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:42:36,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:42:36,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:42:36,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:42:36,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:42:36,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:42:36,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:42:36,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:42:36,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:42:36,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:42:36,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:42:36,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:42:36,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:42:36,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:42:36,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:42:36,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:42:36,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:42:36,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:42:36,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:42:36,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:42:36,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:42:36,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:42:36,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:42:36,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:42:36,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:42:36,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:42:36,088 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:42:36,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:42:36,089 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:42:36,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:42:36,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:42:36,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:42:36,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:42:36,090 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:42:36,091 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:42:36,091 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:42:36,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:42:36,091 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:42:36,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:42:36,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:42:36,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:42:36,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:42:36,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:42:36,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:42:36,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:42:36,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:42:36,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:42:36,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:42:36,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:42:36,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 [2021-11-19 04:42:36,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:42:36,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:42:36,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:42:36,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:42:36,446 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:42:36,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-11-19 04:42:36,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/b03c59c9b/a0b27c535f9c4139953f2748e72c235a/FLAG79fd3c30f [2021-11-19 04:42:37,172 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:42:37,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-11-19 04:42:37,199 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/b03c59c9b/a0b27c535f9c4139953f2748e72c235a/FLAG79fd3c30f [2021-11-19 04:42:37,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/b03c59c9b/a0b27c535f9c4139953f2748e72c235a [2021-11-19 04:42:37,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:42:37,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:42:37,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:42:37,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:42:37,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:42:37,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:37" (1/1) ... [2021-11-19 04:42:37,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c023190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:37, skipping insertion in model container [2021-11-19 04:42:37,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:37" (1/1) ... [2021-11-19 04:42:37,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:42:37,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:42:37,900 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-11-19 04:42:37,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-11-19 04:42:37,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-11-19 04:42:37,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-11-19 04:42:37,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-11-19 04:42:37,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-11-19 04:42:37,916 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-11-19 04:42:37,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-11-19 04:42:37,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-11-19 04:42:37,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-11-19 04:42:37,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-11-19 04:42:37,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-11-19 04:42:37,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-11-19 04:42:37,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-11-19 04:42:37,947 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:42:37,960 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:42:38,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-11-19 04:42:38,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-11-19 04:42:38,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-11-19 04:42:38,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-11-19 04:42:38,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-11-19 04:42:38,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-11-19 04:42:38,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-11-19 04:42:38,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-11-19 04:42:38,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-11-19 04:42:38,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-11-19 04:42:38,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-11-19 04:42:38,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-11-19 04:42:38,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-11-19 04:42:38,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-11-19 04:42:38,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:42:38,114 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:42:38,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38 WrapperNode [2021-11-19 04:42:38,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:42:38,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:42:38,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:42:38,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:42:38,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:42:38,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:42:38,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:42:38,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:42:38,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (1/1) ... [2021-11-19 04:42:38,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:42:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:42:38,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:42:38,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:42:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:42:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:42:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:42:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:42:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:42:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:42:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:42:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:42:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:42:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:42:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:42:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:42:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:42:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:42:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:42:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:42:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:42:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:42:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:42:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:42:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:42:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:42:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:42:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:42:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:42:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:42:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:42:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:42:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:42:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:42:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:42:38,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:42:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:42:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:42:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:42:38,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:42:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:42:38,391 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:42:38,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:42:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:42:38,393 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:42:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:42:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:42:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:42:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:42:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:42:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:42:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:42:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:42:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:42:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:42:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:42:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:42:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:42:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:42:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:42:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:42:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:42:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 04:42:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:42:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:42:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:42:38,399 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:42:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:42:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:42:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:42:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:42:38,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:42:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:42:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:42:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:42:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:42:38,401 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:42:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:42:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:42:38,402 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:42:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:42:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:42:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:42:38,403 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:42:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:42:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:42:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:42:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:42:38,404 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:42:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:42:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:42:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:42:38,406 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:42:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:42:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:42:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:42:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:42:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:42:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:42:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:42:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:42:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:42:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:42:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:42:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:42:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:42:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:42:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:42:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:42:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:42:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:42:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 04:42:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:42:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:42:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:42:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:42:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:42:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:42:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:42:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:42:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:42:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:42:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:42:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:42:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:42:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:42:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:42:38,696 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:42:38,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:42:39,104 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:42:39,112 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:42:39,113 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-19 04:42:39,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:39 BoogieIcfgContainer [2021-11-19 04:42:39,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:42:39,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:42:39,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:42:39,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:42:39,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:42:37" (1/3) ... [2021-11-19 04:42:39,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcba1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:39, skipping insertion in model container [2021-11-19 04:42:39,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:38" (2/3) ... [2021-11-19 04:42:39,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcba1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:39, skipping insertion in model container [2021-11-19 04:42:39,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:39" (3/3) ... [2021-11-19 04:42:39,125 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2021-11-19 04:42:39,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:42:39,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-19 04:42:39,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:42:39,227 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 [2021-11-19 04:42:39,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-19 04:42:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 101 states have (on average 2.2475247524752477) internal successors, (227), 171 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:42:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:42:39,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:39,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:39,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1926376585, now seen corresponding path program 1 times [2021-11-19 04:42:39,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:39,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450221792] [2021-11-19 04:42:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:39,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:39,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:39,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450221792] [2021-11-19 04:42:39,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450221792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:39,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:39,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:42:39,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367138229] [2021-11-19 04:42:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:39,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:39,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:39,583 INFO L87 Difference]: Start difference. First operand has 176 states, 101 states have (on average 2.2475247524752477) internal successors, (227), 171 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:39,827 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-11-19 04:42:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:42:39,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:42:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:39,844 INFO L225 Difference]: With dead ends: 173 [2021-11-19 04:42:39,845 INFO L226 Difference]: Without dead ends: 169 [2021-11-19 04:42:39,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:39,851 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 334 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:39,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 116 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:42:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-19 04:42:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-11-19 04:42:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.7058823529411764) internal successors, (174), 161 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2021-11-19 04:42:39,911 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 7 [2021-11-19 04:42:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:39,911 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2021-11-19 04:42:39,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2021-11-19 04:42:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:42:39,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:39,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:39,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:42:39,914 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:39,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1926376584, now seen corresponding path program 1 times [2021-11-19 04:42:39,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:39,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890861915] [2021-11-19 04:42:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:39,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:39,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:39,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890861915] [2021-11-19 04:42:39,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890861915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:39,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:39,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:42:39,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998968168] [2021-11-19 04:42:39,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:39,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:39,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:39,992 INFO L87 Difference]: Start difference. First operand 165 states and 177 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:40,138 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2021-11-19 04:42:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:42:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:42:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:40,140 INFO L225 Difference]: With dead ends: 159 [2021-11-19 04:42:40,141 INFO L226 Difference]: Without dead ends: 159 [2021-11-19 04:42:40,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:40,143 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 310 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:40,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 114 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:42:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-19 04:42:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-11-19 04:42:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 151 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2021-11-19 04:42:40,158 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 7 [2021-11-19 04:42:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:40,158 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2021-11-19 04:42:40,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2021-11-19 04:42:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:42:40,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:40,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:40,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:42:40,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2140712926, now seen corresponding path program 1 times [2021-11-19 04:42:40,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:40,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022166033] [2021-11-19 04:42:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:40,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:40,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:40,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022166033] [2021-11-19 04:42:40,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022166033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:40,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:42:40,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003909588] [2021-11-19 04:42:40,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:42:40,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:40,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:42:40,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:40,247 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:40,440 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2021-11-19 04:42:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:42:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 04:42:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:40,442 INFO L225 Difference]: With dead ends: 165 [2021-11-19 04:42:40,442 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 04:42:40,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:42:40,444 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 422 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:40,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 111 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:42:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 04:42:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-11-19 04:42:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 109 states have (on average 1.5504587155963303) internal successors, (169), 153 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2021-11-19 04:42:40,455 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 12 [2021-11-19 04:42:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:40,456 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2021-11-19 04:42:40,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2021-11-19 04:42:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:42:40,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:40,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:40,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:42:40,457 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:40,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2140712927, now seen corresponding path program 1 times [2021-11-19 04:42:40,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:40,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767101071] [2021-11-19 04:42:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:40,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:40,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767101071] [2021-11-19 04:42:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767101071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:40,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:42:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084404859] [2021-11-19 04:42:40,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:40,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:40,598 INFO L87 Difference]: Start difference. First operand 157 states and 172 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:41,059 INFO L93 Difference]: Finished difference Result 248 states and 264 transitions. [2021-11-19 04:42:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:42:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 04:42:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:41,062 INFO L225 Difference]: With dead ends: 248 [2021-11-19 04:42:41,063 INFO L226 Difference]: Without dead ends: 248 [2021-11-19 04:42:41,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:42:41,064 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 885 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:41,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 102 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:42:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-19 04:42:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 162. [2021-11-19 04:42:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 158 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-11-19 04:42:41,077 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 12 [2021-11-19 04:42:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:41,078 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-11-19 04:42:41,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-11-19 04:42:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 04:42:41,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:41,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:41,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:42:41,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr18ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1937591901, now seen corresponding path program 1 times [2021-11-19 04:42:41,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:41,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687651786] [2021-11-19 04:42:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:41,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:41,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:41,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687651786] [2021-11-19 04:42:41,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687651786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:41,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:41,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:42:41,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129488183] [2021-11-19 04:42:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:41,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:41,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:41,146 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:41,222 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2021-11-19 04:42:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:42:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-19 04:42:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:41,224 INFO L225 Difference]: With dead ends: 152 [2021-11-19 04:42:41,225 INFO L226 Difference]: Without dead ends: 152 [2021-11-19 04:42:41,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:41,228 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 271 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 137 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:42:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-19 04:42:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-19 04:42:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 148 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2021-11-19 04:42:41,261 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 13 [2021-11-19 04:42:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:41,262 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2021-11-19 04:42:41,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2021-11-19 04:42:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:42:41,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:41,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:42:41,266 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1579051744, now seen corresponding path program 1 times [2021-11-19 04:42:41,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:41,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380634281] [2021-11-19 04:42:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:41,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:41,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:41,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380634281] [2021-11-19 04:42:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380634281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:41,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:41,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:42:41,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030840133] [2021-11-19 04:42:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:41,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:41,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:41,366 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:42,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:42,150 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2021-11-19 04:42:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:42:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 04:42:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:42,153 INFO L225 Difference]: With dead ends: 223 [2021-11-19 04:42:42,153 INFO L226 Difference]: Without dead ends: 223 [2021-11-19 04:42:42,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:42:42,154 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 251 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:42,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 206 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 04:42:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-19 04:42:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 151. [2021-11-19 04:42:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.4862385321100917) internal successors, (162), 147 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-11-19 04:42:42,161 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 16 [2021-11-19 04:42:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:42,162 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-11-19 04:42:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-11-19 04:42:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:42:42,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:42,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:42,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:42:42,163 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1579051743, now seen corresponding path program 1 times [2021-11-19 04:42:42,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:42,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946422642] [2021-11-19 04:42:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:42,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:42,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:42,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946422642] [2021-11-19 04:42:42,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946422642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:42,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:42:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439407128] [2021-11-19 04:42:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:42,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:42,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:42,318 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:43,078 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2021-11-19 04:42:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:42:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 04:42:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:43,080 INFO L225 Difference]: With dead ends: 215 [2021-11-19 04:42:43,080 INFO L226 Difference]: Without dead ends: 215 [2021-11-19 04:42:43,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:42:43,082 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 232 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:43,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 203 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 04:42:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-19 04:42:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 140. [2021-11-19 04:42:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 136 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-11-19 04:42:43,088 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 16 [2021-11-19 04:42:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:43,088 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-11-19 04:42:43,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-11-19 04:42:43,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 04:42:43,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:43,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:43,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:42:43,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1760689906, now seen corresponding path program 1 times [2021-11-19 04:42:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:43,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029769164] [2021-11-19 04:42:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:43,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:43,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:43,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029769164] [2021-11-19 04:42:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029769164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:43,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:43,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:42:43,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625995307] [2021-11-19 04:42:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:43,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:43,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:43,165 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:43,347 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2021-11-19 04:42:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:42:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-19 04:42:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:43,348 INFO L225 Difference]: With dead ends: 195 [2021-11-19 04:42:43,349 INFO L226 Difference]: Without dead ends: 195 [2021-11-19 04:42:43,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:43,350 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 233 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:43,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 143 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:42:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-19 04:42:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 153. [2021-11-19 04:42:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 117 states have (on average 1.4017094017094016) internal successors, (164), 149 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 167 transitions. [2021-11-19 04:42:43,358 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 167 transitions. Word has length 19 [2021-11-19 04:42:43,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:43,359 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 167 transitions. [2021-11-19 04:42:43,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2021-11-19 04:42:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 04:42:43,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:43,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:43,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:42:43,361 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -555742479, now seen corresponding path program 1 times [2021-11-19 04:42:43,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:43,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039746167] [2021-11-19 04:42:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:43,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:43,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:43,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039746167] [2021-11-19 04:42:43,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039746167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:43,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:43,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:42:43,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932940004] [2021-11-19 04:42:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:43,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:43,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:43,435 INFO L87 Difference]: Start difference. First operand 153 states and 167 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:43,838 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-11-19 04:42:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:42:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-19 04:42:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:43,840 INFO L225 Difference]: With dead ends: 153 [2021-11-19 04:42:43,840 INFO L226 Difference]: Without dead ends: 153 [2021-11-19 04:42:43,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:42:43,841 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 223 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:43,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 164 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:42:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-19 04:42:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-11-19 04:42:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 116 states have (on average 1.396551724137931) internal successors, (162), 147 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-11-19 04:42:43,848 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 23 [2021-11-19 04:42:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-11-19 04:42:43,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-11-19 04:42:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:42:43,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:43,850 INFO L514 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] [2021-11-19 04:42:43,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:42:43,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:43,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1696785143, now seen corresponding path program 1 times [2021-11-19 04:42:43,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:43,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595418889] [2021-11-19 04:42:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:43,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:43,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:43,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595418889] [2021-11-19 04:42:43,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595418889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:43,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:43,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:42:43,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886153430] [2021-11-19 04:42:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:43,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:42:43,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:42:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:43,899 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:44,196 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2021-11-19 04:42:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:42:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 04:42:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:44,198 INFO L225 Difference]: With dead ends: 184 [2021-11-19 04:42:44,198 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 04:42:44,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:42:44,200 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:44,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 144 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:42:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 04:42:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2021-11-19 04:42:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 158 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2021-11-19 04:42:44,206 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 24 [2021-11-19 04:42:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:44,206 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2021-11-19 04:42:44,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2021-11-19 04:42:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 04:42:44,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:44,208 INFO L514 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] [2021-11-19 04:42:44,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:42:44,209 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1457853172, now seen corresponding path program 1 times [2021-11-19 04:42:44,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:44,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430895021] [2021-11-19 04:42:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:44,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:44,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430895021] [2021-11-19 04:42:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430895021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:44,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:44,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:42:44,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519767639] [2021-11-19 04:42:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:44,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:44,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:44,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:44,306 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:44,744 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2021-11-19 04:42:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:42:44,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 04:42:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:44,746 INFO L225 Difference]: With dead ends: 160 [2021-11-19 04:42:44,746 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 04:42:44,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:42:44,750 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 154 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:44,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 150 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:42:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 04:42:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-11-19 04:42:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 121 states have (on average 1.371900826446281) internal successors, (166), 152 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2021-11-19 04:42:44,764 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 26 [2021-11-19 04:42:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:44,765 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2021-11-19 04:42:44,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2021-11-19 04:42:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 04:42:44,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:44,766 INFO L514 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] [2021-11-19 04:42:44,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 04:42:44,766 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1062106762, now seen corresponding path program 1 times [2021-11-19 04:42:44,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:44,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796814402] [2021-11-19 04:42:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:44,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:44,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:44,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796814402] [2021-11-19 04:42:44,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796814402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:44,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:44,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:42:44,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136942193] [2021-11-19 04:42:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:44,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:42:44,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:42:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:42:44,835 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:45,102 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2021-11-19 04:42:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:42:45,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 04:42:45,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:45,105 INFO L225 Difference]: With dead ends: 156 [2021-11-19 04:42:45,105 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 04:42:45,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:42:45,107 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 295 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:45,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 126 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:42:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 04:42:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-19 04:42:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 121 states have (on average 1.3636363636363635) internal successors, (165), 152 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2021-11-19 04:42:45,115 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 26 [2021-11-19 04:42:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:45,115 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2021-11-19 04:42:45,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2021-11-19 04:42:45,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:42:45,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:45,121 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:45,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 04:42:45,122 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -198024619, now seen corresponding path program 1 times [2021-11-19 04:42:45,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:45,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884455528] [2021-11-19 04:42:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:45,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:45,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:45,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884455528] [2021-11-19 04:42:45,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884455528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:42:45,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459498677] [2021-11-19 04:42:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:45,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:42:45,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:42:45,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:42:45,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:42:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:45,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 04:42:45,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:45,798 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 29 treesize of output 21 [2021-11-19 04:42:45,806 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 18 treesize of output 10 [2021-11-19 04:42:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:45,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:46,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459498677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:42:46,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:42:46,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2021-11-19 04:42:46,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173060882] [2021-11-19 04:42:46,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:42:46,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 04:42:46,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 04:42:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:42:46,083 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:47,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:47,053 INFO L93 Difference]: Finished difference Result 185 states and 201 transitions. [2021-11-19 04:42:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:42:47,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-19 04:42:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:47,055 INFO L225 Difference]: With dead ends: 185 [2021-11-19 04:42:47,055 INFO L226 Difference]: Without dead ends: 185 [2021-11-19 04:42:47,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-11-19 04:42:47,056 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 293 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:47,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 138 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 04:42:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-19 04:42:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 166. [2021-11-19 04:42:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 162 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2021-11-19 04:42:47,061 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 29 [2021-11-19 04:42:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2021-11-19 04:42:47,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2021-11-19 04:42:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 04:42:47,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:47,063 INFO L514 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] [2021-11-19 04:42:47,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:47,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 04:42:47,264 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr69ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1843797011, now seen corresponding path program 1 times [2021-11-19 04:42:47,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:47,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701295461] [2021-11-19 04:42:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:47,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:42:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:47,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:42:47,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701295461] [2021-11-19 04:42:47,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701295461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:42:47,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716679937] [2021-11-19 04:42:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:47,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:42:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:42:47,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:42:47,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:42:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:47,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:42:47,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:47,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:47,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716679937] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:42:47,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:42:47,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-19 04:42:47,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891069835] [2021-11-19 04:42:47,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:42:47,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:42:47,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:42:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:42:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:42:47,846 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:48,482 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2021-11-19 04:42:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:42:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-19 04:42:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:48,484 INFO L225 Difference]: With dead ends: 176 [2021-11-19 04:42:48,485 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 04:42:48,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:42:48,486 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 165 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:48,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 128 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 695 Invalid, 0 Unknown, 148 Unchecked, 0.5s Time] [2021-11-19 04:42:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 04:42:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-19 04:42:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 122 states have (on average 1.360655737704918) internal successors, (166), 153 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2021-11-19 04:42:48,492 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 30 [2021-11-19 04:42:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:48,493 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2021-11-19 04:42:48,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2021-11-19 04:42:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 04:42:48,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:48,494 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:48,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:48,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 04:42:48,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1469946611, now seen corresponding path program 1 times [2021-11-19 04:42:48,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:42:48,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553191916] [2021-11-19 04:42:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:48,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:42:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:48,768 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2021-11-19 04:42:48,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 04:42:48,781 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.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) 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:610) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 04:42:48,786 INFO L158 Benchmark]: Toolchain (without parser) took 11370.22ms. Allocated memory was 104.9MB in the beginning and 174.1MB in the end (delta: 69.2MB). Free memory was 61.9MB in the beginning and 124.9MB in the end (delta: -63.0MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-19 04:42:48,787 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:42:48,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 699.31ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 68.6MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:42:48,788 INFO L158 Benchmark]: Boogie Preprocessor took 152.43ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 04:42:48,788 INFO L158 Benchmark]: RCFGBuilder took 843.39ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 37.5MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-19 04:42:48,789 INFO L158 Benchmark]: TraceAbstraction took 9668.46ms. Allocated memory was 104.9MB in the beginning and 174.1MB in the end (delta: 69.2MB). Free memory was 36.9MB in the beginning and 124.9MB in the end (delta: -88.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:42:48,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 699.31ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 68.6MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 152.43ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 843.39ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 37.5MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9668.46ms. Allocated memory was 104.9MB in the beginning and 174.1MB in the end (delta: 69.2MB). Free memory was 36.9MB in the beginning and 124.9MB in the end (delta: -88.0MB). There was no memory consumed. Max. memory is 16.1GB. * 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. [2021-11-19 04:42:48,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/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_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:42:51,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:42:51,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:42:51,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:42:51,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:42:51,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:42:51,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:42:51,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:42:51,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:42:51,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:42:51,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:42:51,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:42:51,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:42:51,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:42:51,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:42:51,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:42:51,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:42:51,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:42:51,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:42:51,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:42:51,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:42:51,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:42:51,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:42:51,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:42:51,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:42:51,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:42:51,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:42:51,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:42:51,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:42:51,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:42:51,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:42:51,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:42:51,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:42:51,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:42:51,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:42:51,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:42:51,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:42:51,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:42:51,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:42:51,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:42:51,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:42:51,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:42:51,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:42:51,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:42:51,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:42:51,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:42:51,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:42:51,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:42:51,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:42:51,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:42:51,674 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:42:51,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:42:51,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:42:51,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:42:51,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:42:51,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:42:51,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:42:51,677 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:42:51,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:42:51,677 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:42:51,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:42:51,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:42:51,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:42:51,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:42:51,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:42:51,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:42:51,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:42:51,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:42:51,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:42:51,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:42:51,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:42:51,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:42:51,681 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:42:51,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:42:51,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:42:51,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:42:51,682 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_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 [2021-11-19 04:42:52,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:42:52,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:42:52,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:42:52,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:42:52,195 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:42:52,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-11-19 04:42:52,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/cbcff397a/22511635013f4f46bcbcb8bfe9ea5d38/FLAG4126d0dd8 [2021-11-19 04:42:53,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:42:53,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i [2021-11-19 04:42:53,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/cbcff397a/22511635013f4f46bcbcb8bfe9ea5d38/FLAG4126d0dd8 [2021-11-19 04:42:53,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/data/cbcff397a/22511635013f4f46bcbcb8bfe9ea5d38 [2021-11-19 04:42:53,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:42:53,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:42:53,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:42:53,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:42:53,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:42:53,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcf22f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53, skipping insertion in model container [2021-11-19 04:42:53,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:42:53,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:42:53,461 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-11-19 04:42:53,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-11-19 04:42:53,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-11-19 04:42:53,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-11-19 04:42:53,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-11-19 04:42:53,471 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-11-19 04:42:53,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-11-19 04:42:53,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-11-19 04:42:53,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-11-19 04:42:53,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-11-19 04:42:53,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-11-19 04:42:53,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-11-19 04:42:53,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-11-19 04:42:53,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-11-19 04:42:53,490 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:42:53,505 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:42:53,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2021-11-19 04:42:53,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2021-11-19 04:42:53,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2021-11-19 04:42:53,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2021-11-19 04:42:53,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2021-11-19 04:42:53,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2021-11-19 04:42:53,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2021-11-19 04:42:53,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2021-11-19 04:42:53,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2021-11-19 04:42:53,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2021-11-19 04:42:53,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2021-11-19 04:42:53,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2021-11-19 04:42:53,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2021-11-19 04:42:53,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2021-11-19 04:42:53,600 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:42:53,635 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:42:53,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53 WrapperNode [2021-11-19 04:42:53,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:42:53,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:42:53,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:42:53,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:42:53,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:42:53,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:42:53,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:42:53,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:42:53,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (1/1) ... [2021-11-19 04:42:53,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:42:53,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:42:53,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:42:53,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:42:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:42:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:42:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:42:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:42:53,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:42:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:42:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:42:53,828 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:42:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:42:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:42:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:42:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:42:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:42:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:42:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:42:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:42:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:42:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:42:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:42:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:42:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:42:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:42:53,834 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:42:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:42:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:42:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:42:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:42:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:42:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:42:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:42:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:42:53,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:42:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:42:53,855 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:42:53,856 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:42:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:42:53,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:42:53,858 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:42:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:42:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:42:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:42:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:42:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:42:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:42:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:42:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:42:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:42:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:42:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:42:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:42:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:42:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:42:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:42:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:42:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:42:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:42:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:42:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:42:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:42:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-19 04:42:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:42:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:42:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:42:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:42:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:42:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:42:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:42:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:42:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:42:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:42:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:42:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:42:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:42:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:42:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:42:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:42:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:42:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:42:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:42:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:42:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:42:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:42:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:42:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:42:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:42:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:42:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:42:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:42:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:42:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:42:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:42:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:42:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:42:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:42:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:42:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:42:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:42:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:42:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:42:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:42:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:42:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:42:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:42:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:42:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:42:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:42:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:42:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:42:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 04:42:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:42:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:42:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:42:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:42:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:42:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:42:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:42:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:42:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:42:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:42:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:42:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:42:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:42:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:42:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:42:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:42:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:42:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:42:54,278 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:42:54,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:42:55,151 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:42:55,162 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:42:55,163 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-19 04:42:55,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:55 BoogieIcfgContainer [2021-11-19 04:42:55,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:42:55,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:42:55,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:42:55,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:42:55,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:42:53" (1/3) ... [2021-11-19 04:42:55,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a9461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:55, skipping insertion in model container [2021-11-19 04:42:55,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:42:53" (2/3) ... [2021-11-19 04:42:55,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a9461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:42:55, skipping insertion in model container [2021-11-19 04:42:55,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:42:55" (3/3) ... [2021-11-19 04:42:55,178 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2021-11-19 04:42:55,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:42:55,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-11-19 04:42:55,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:42:55,268 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 [2021-11-19 04:42:55,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-11-19 04:42:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 168 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:42:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:42:55,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:55,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:55,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1735636923, now seen corresponding path program 1 times [2021-11-19 04:42:55,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:42:55,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094619369] [2021-11-19 04:42:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:55,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:42:55,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:42:55,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:42:55,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:42:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:55,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:42:55,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:55,597 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 [2021-11-19 04:42:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:55,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:55,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:42:55,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094619369] [2021-11-19 04:42:55,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094619369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:55,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:55,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:42:55,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477331665] [2021-11-19 04:42:55,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:55,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:42:55,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:42:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:42:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:42:55,741 INFO L87 Difference]: Start difference. First operand has 173 states, 98 states have (on average 2.2755102040816326) internal successors, (223), 168 states have internal predecessors, (223), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:56,041 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2021-11-19 04:42:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:42:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:42:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:56,056 INFO L225 Difference]: With dead ends: 170 [2021-11-19 04:42:56,057 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 04:42:56,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:42:56,063 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 155 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:56,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 114 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:42:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 04:42:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-11-19 04:42:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 158 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-11-19 04:42:56,123 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 7 [2021-11-19 04:42:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:56,123 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-11-19 04:42:56,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-11-19 04:42:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:42:56,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:56,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:56,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:42:56,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:56,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1735636922, now seen corresponding path program 1 times [2021-11-19 04:42:56,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:42:56,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746263309] [2021-11-19 04:42:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:56,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:42:56,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:42:56,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:42:56,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:42:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:56,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:42:56,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:56,549 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 [2021-11-19 04:42:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:56,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:56,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:42:56,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746263309] [2021-11-19 04:42:56,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746263309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:56,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:56,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:42:56,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527547188] [2021-11-19 04:42:56,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:56,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:56,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:42:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:56,650 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:56,984 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2021-11-19 04:42:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:42:56,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:42:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:56,988 INFO L225 Difference]: With dead ends: 156 [2021-11-19 04:42:56,988 INFO L226 Difference]: Without dead ends: 156 [2021-11-19 04:42:56,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:56,990 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 143 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:56,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 128 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:42:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-19 04:42:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-11-19 04:42:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.606060606060606) internal successors, (159), 148 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2021-11-19 04:42:57,006 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 7 [2021-11-19 04:42:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:57,007 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2021-11-19 04:42:57,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2021-11-19 04:42:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 04:42:57,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:57,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:57,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:57,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:42:57,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:57,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1828127689, now seen corresponding path program 1 times [2021-11-19 04:42:57,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:42:57,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874534057] [2021-11-19 04:42:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:57,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:42:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:42:57,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:42:57,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:42:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:57,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:42:57,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:57,375 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 [2021-11-19 04:42:57,458 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-19 04:42:57,458 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 20 treesize of output 25 [2021-11-19 04:42:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:57,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:57,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:42:57,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874534057] [2021-11-19 04:42:57,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874534057] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:57,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:57,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:42:57,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607509296] [2021-11-19 04:42:57,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:57,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:42:57,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:42:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:42:57,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:42:57,589 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:57,961 INFO L93 Difference]: Finished difference Result 162 states and 171 transitions. [2021-11-19 04:42:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:42:57,962 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 04:42:57,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:57,964 INFO L225 Difference]: With dead ends: 162 [2021-11-19 04:42:57,964 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 04:42:57,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:42:57,967 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 256 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:57,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 120 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:42:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 04:42:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2021-11-19 04:42:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 106 states have (on average 1.5566037735849056) internal successors, (165), 150 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2021-11-19 04:42:57,982 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 11 [2021-11-19 04:42:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:57,983 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2021-11-19 04:42:57,983 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2021-11-19 04:42:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 04:42:57,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:57,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:58,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:58,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:42:58,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1828127690, now seen corresponding path program 1 times [2021-11-19 04:42:58,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:42:58,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825067206] [2021-11-19 04:42:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:58,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:42:58,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:42:58,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:42:58,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:42:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:58,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:42:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:58,399 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 [2021-11-19 04:42:58,509 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:42:58,509 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 12 treesize of output 14 [2021-11-19 04:42:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:58,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:58,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:42:58,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825067206] [2021-11-19 04:42:58,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825067206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:58,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:58,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-19 04:42:58,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143578157] [2021-11-19 04:42:58,906 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:58,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:42:58,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:42:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:42:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:42:58,909 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:59,436 INFO L93 Difference]: Finished difference Result 268 states and 290 transitions. [2021-11-19 04:42:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:42:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-19 04:42:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:59,440 INFO L225 Difference]: With dead ends: 268 [2021-11-19 04:42:59,440 INFO L226 Difference]: Without dead ends: 268 [2021-11-19 04:42:59,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:42:59,442 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 489 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:59,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 297 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 137 Unchecked, 0.5s Time] [2021-11-19 04:42:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-19 04:42:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 155. [2021-11-19 04:42:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 151 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2021-11-19 04:42:59,457 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 11 [2021-11-19 04:42:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:59,457 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2021-11-19 04:42:59,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2021-11-19 04:42:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:42:59,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:59,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:59,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:42:59,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:42:59,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr18ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:42:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:42:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 837384167, now seen corresponding path program 1 times [2021-11-19 04:42:59,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:42:59,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338112541] [2021-11-19 04:42:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:42:59,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:42:59,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:42:59,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:42:59,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:42:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:42:59,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:42:59,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:42:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:59,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:42:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:42:59,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:42:59,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338112541] [2021-11-19 04:42:59,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338112541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:42:59,848 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:42:59,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:42:59,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748762681] [2021-11-19 04:42:59,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:42:59,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:42:59,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:42:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:42:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:42:59,850 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:42:59,928 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-19 04:42:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:42:59,929 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 04:42:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:42:59,930 INFO L225 Difference]: With dead ends: 145 [2021-11-19 04:42:59,930 INFO L226 Difference]: Without dead ends: 145 [2021-11-19 04:42:59,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:42:59,932 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 121 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:42:59,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 138 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:42:59,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-19 04:42:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-19 04:42:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 141 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-19 04:42:59,941 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 12 [2021-11-19 04:42:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:42:59,942 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-19 04:42:59,942 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:42:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-19 04:42:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:42:59,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:42:59,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:42:59,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:00,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:00,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1322768587, now seen corresponding path program 1 times [2021-11-19 04:43:00,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:00,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609434011] [2021-11-19 04:43:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:00,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:00,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:00,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:43:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:00,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:43:00,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:00,302 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 [2021-11-19 04:43:00,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 04:43:00,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-19 04:43:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:00,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:00,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:00,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609434011] [2021-11-19 04:43:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609434011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:00,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:00,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 04:43:00,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313670758] [2021-11-19 04:43:00,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:00,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:43:00,460 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:01,256 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2021-11-19 04:43:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:43:01,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:43:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:01,258 INFO L225 Difference]: With dead ends: 216 [2021-11-19 04:43:01,258 INFO L226 Difference]: Without dead ends: 216 [2021-11-19 04:43:01,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:43:01,260 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 107 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:01,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 676 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 04:43:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-19 04:43:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 144. [2021-11-19 04:43:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.5048543689320388) internal successors, (155), 140 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2021-11-19 04:43:01,271 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 15 [2021-11-19 04:43:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:01,271 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2021-11-19 04:43:01,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2021-11-19 04:43:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:43:01,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:01,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:01,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:01,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:01,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1322768588, now seen corresponding path program 1 times [2021-11-19 04:43:01,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:01,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559906805] [2021-11-19 04:43:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:01,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:01,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:01,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:43:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:01,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:43:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:01,631 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 [2021-11-19 04:43:01,660 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 [2021-11-19 04:43:01,667 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 [2021-11-19 04:43:01,711 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 [2021-11-19 04:43:01,715 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 [2021-11-19 04:43:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:01,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:02,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:02,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559906805] [2021-11-19 04:43:02,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559906805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:02,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:02,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 04:43:02,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15929347] [2021-11-19 04:43:02,083 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:02,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:43:02,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:02,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:43:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:43:02,084 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:04,035 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2021-11-19 04:43:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:43:04,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:43:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:04,037 INFO L225 Difference]: With dead ends: 211 [2021-11-19 04:43:04,037 INFO L226 Difference]: Without dead ends: 211 [2021-11-19 04:43:04,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:43:04,038 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 189 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:04,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 945 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 04:43:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-19 04:43:04,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 137. [2021-11-19 04:43:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 133 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-11-19 04:43:04,047 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 15 [2021-11-19 04:43:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:04,047 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-11-19 04:43:04,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-11-19 04:43:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 04:43:04,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:04,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:04,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:04,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:04,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:04,261 INFO L85 PathProgramCache]: Analyzing trace with hash 788457692, now seen corresponding path program 1 times [2021-11-19 04:43:04,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:04,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110676068] [2021-11-19 04:43:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:04,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:04,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:04,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:43:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:04,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:43:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:04,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:04,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:04,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110676068] [2021-11-19 04:43:04,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110676068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:04,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:04,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:43:04,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35424372] [2021-11-19 04:43:04,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:04,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:43:04,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:43:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:43:04,465 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:04,512 INFO L93 Difference]: Finished difference Result 248 states and 278 transitions. [2021-11-19 04:43:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:43:04,513 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 04:43:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:04,515 INFO L225 Difference]: With dead ends: 248 [2021-11-19 04:43:04,515 INFO L226 Difference]: Without dead ends: 248 [2021-11-19 04:43:04,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:43:04,516 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 152 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:04,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 331 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:43:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-19 04:43:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 164. [2021-11-19 04:43:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.390625) internal successors, (178), 160 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2021-11-19 04:43:04,524 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 18 [2021-11-19 04:43:04,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:04,525 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2021-11-19 04:43:04,525 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2021-11-19 04:43:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 04:43:04,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:04,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:04,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:04,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:04,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1487936176, now seen corresponding path program 1 times [2021-11-19 04:43:04,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618358161] [2021-11-19 04:43:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:04,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:04,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:04,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:04,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:43:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:04,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:43:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:04,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:05,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:05,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618358161] [2021-11-19 04:43:05,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618358161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:05,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:05,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:43:05,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649142816] [2021-11-19 04:43:05,001 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:05,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:43:05,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:05,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:43:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:43:05,003 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:05,047 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2021-11-19 04:43:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:05,049 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 04:43:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:05,051 INFO L225 Difference]: With dead ends: 195 [2021-11-19 04:43:05,051 INFO L226 Difference]: Without dead ends: 195 [2021-11-19 04:43:05,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:05,052 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 31 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:05,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 375 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:43:05,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-19 04:43:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2021-11-19 04:43:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 169 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 192 transitions. [2021-11-19 04:43:05,059 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 192 transitions. Word has length 21 [2021-11-19 04:43:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:05,060 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 192 transitions. [2021-11-19 04:43:05,060 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 192 transitions. [2021-11-19 04:43:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 04:43:05,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:05,061 INFO L514 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] [2021-11-19 04:43:05,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:05,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:05,277 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr66ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1119238024, now seen corresponding path program 1 times [2021-11-19 04:43:05,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:05,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241513923] [2021-11-19 04:43:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:05,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:05,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:05,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:05,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:43:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:05,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:43:05,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:05,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:05,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:05,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241513923] [2021-11-19 04:43:05,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241513923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:05,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:05,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:43:05,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580669026] [2021-11-19 04:43:05,525 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:05,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:43:05,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:43:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:43:05,527 INFO L87 Difference]: Start difference. First operand 173 states and 192 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:05,706 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-11-19 04:43:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 04:43:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:05,709 INFO L225 Difference]: With dead ends: 173 [2021-11-19 04:43:05,709 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 04:43:05,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:05,710 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 134 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:05,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 221 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:43:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 04:43:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-19 04:43:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 169 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-11-19 04:43:05,717 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 22 [2021-11-19 04:43:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:05,718 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-11-19 04:43:05,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-11-19 04:43:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 04:43:05,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:05,720 INFO L514 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] [2021-11-19 04:43:05,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:05,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:05,932 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1623470821, now seen corresponding path program 1 times [2021-11-19 04:43:05,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:05,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081199951] [2021-11-19 04:43:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:05,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:05,934 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:43:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:06,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:43:06,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:06,068 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 [2021-11-19 04:43:06,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-19 04:43:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:06,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:06,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:06,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081199951] [2021-11-19 04:43:06,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081199951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:06,209 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:06,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 04:43:06,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525475105] [2021-11-19 04:43:06,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:06,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:06,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:06,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:06,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:43:06,210 INFO L87 Difference]: Start difference. First operand 173 states and 191 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:06,565 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2021-11-19 04:43:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:43:06,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 04:43:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:06,567 INFO L225 Difference]: With dead ends: 171 [2021-11-19 04:43:06,567 INFO L226 Difference]: Without dead ends: 171 [2021-11-19 04:43:06,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:06,568 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 89 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:06,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 539 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:43:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-19 04:43:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-11-19 04:43:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 167 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 188 transitions. [2021-11-19 04:43:06,575 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 188 transitions. Word has length 22 [2021-11-19 04:43:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:06,575 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 188 transitions. [2021-11-19 04:43:06,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 188 transitions. [2021-11-19 04:43:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 04:43:06,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:06,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:06,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:06,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:06,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr67ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -336639908, now seen corresponding path program 1 times [2021-11-19 04:43:06,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:06,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264817251] [2021-11-19 04:43:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:06,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:06,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:06,790 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:06,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:43:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:06,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:43:06,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:07,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:07,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:07,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264817251] [2021-11-19 04:43:07,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264817251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:07,178 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:07,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-11-19 04:43:07,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566805555] [2021-11-19 04:43:07,178 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:07,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:43:07,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:43:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:43:07,179 INFO L87 Difference]: Start difference. First operand 171 states and 188 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:43:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:07,612 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2021-11-19 04:43:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:43:07,614 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-19 04:43:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:07,615 INFO L225 Difference]: With dead ends: 175 [2021-11-19 04:43:07,615 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 04:43:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:43:07,616 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 158 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:07,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 300 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 04:43:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 04:43:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2021-11-19 04:43:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 167 states have internal predecessors, (184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2021-11-19 04:43:07,624 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 23 [2021-11-19 04:43:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:07,624 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2021-11-19 04:43:07,625 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:43:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2021-11-19 04:43:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 04:43:07,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:07,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:07,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:07,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:07,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr62REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -317481246, now seen corresponding path program 1 times [2021-11-19 04:43:07,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:07,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130381061] [2021-11-19 04:43:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:07,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:07,841 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:07,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:43:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:07,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:43:07,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:08,010 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 [2021-11-19 04:43:08,017 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 [2021-11-19 04:43:08,059 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-19 04:43:08,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 04:43:08,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:43:08,069 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 27 treesize of output 11 [2021-11-19 04:43:08,168 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 29 treesize of output 21 [2021-11-19 04:43:08,172 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 18 treesize of output 10 [2021-11-19 04:43:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:08,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:08,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:08,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130381061] [2021-11-19 04:43:08,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130381061] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:08,374 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:08,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 04:43:08,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135000659] [2021-11-19 04:43:08,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:08,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:08,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:08,376 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:08,649 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2021-11-19 04:43:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-19 04:43:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:08,651 INFO L225 Difference]: With dead ends: 168 [2021-11-19 04:43:08,651 INFO L226 Difference]: Without dead ends: 168 [2021-11-19 04:43:08,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:43:08,652 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 5 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:08,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 456 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:43:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-19 04:43:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2021-11-19 04:43:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 161 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-11-19 04:43:08,660 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 23 [2021-11-19 04:43:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:08,660 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-11-19 04:43:08,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-11-19 04:43:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 04:43:08,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:08,662 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:08,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:08,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:08,863 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash -90396675, now seen corresponding path program 1 times [2021-11-19 04:43:08,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:08,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635803481] [2021-11-19 04:43:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:08,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:08,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:08,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:43:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:08,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:43:08,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:08,992 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 [2021-11-19 04:43:09,006 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 [2021-11-19 04:43:09,049 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-19 04:43:09,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-19 04:43:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 04:43:09,056 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 27 treesize of output 11 [2021-11-19 04:43:09,159 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 29 treesize of output 21 [2021-11-19 04:43:09,162 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 18 treesize of output 10 [2021-11-19 04:43:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:09,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:09,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:09,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635803481] [2021-11-19 04:43:09,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635803481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:09,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:43:09,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-19 04:43:09,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023378477] [2021-11-19 04:43:09,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:09,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:09,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:09,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:09,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:09,401 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:09,638 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2021-11-19 04:43:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:09,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 04:43:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:09,641 INFO L225 Difference]: With dead ends: 172 [2021-11-19 04:43:09,641 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 04:43:09,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:43:09,642 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 5 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:09,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 460 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:43:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 04:43:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-19 04:43:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 168 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2021-11-19 04:43:09,648 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 26 [2021-11-19 04:43:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:09,649 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 185 transitions. [2021-11-19 04:43:09,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2021-11-19 04:43:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 04:43:09,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:09,651 INFO L514 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] [2021-11-19 04:43:09,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:09,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:09,851 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr69ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1492669267, now seen corresponding path program 1 times [2021-11-19 04:43:09,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:09,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511600640] [2021-11-19 04:43:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:09,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:09,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:09,853 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:09,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:43:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:09,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:43:09,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:10,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:18,341 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:18,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511600640] [2021-11-19 04:43:18,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511600640] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:18,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:43:18,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-19 04:43:18,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2703615] [2021-11-19 04:43:18,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:18,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:43:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:43:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=49, Unknown=3, NotChecked=0, Total=72 [2021-11-19 04:43:18,344 INFO L87 Difference]: Start difference. First operand 172 states and 185 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:18,931 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-11-19 04:43:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:43:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-19 04:43:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:18,933 INFO L225 Difference]: With dead ends: 174 [2021-11-19 04:43:18,933 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 04:43:18,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=3, NotChecked=0, Total=110 [2021-11-19 04:43:18,934 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 13 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:18,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 525 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 227 Invalid, 0 Unknown, 51 Unchecked, 0.5s Time] [2021-11-19 04:43:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 04:43:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-19 04:43:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 122 states have (on average 1.360655737704918) internal successors, (166), 153 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2021-11-19 04:43:18,941 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 27 [2021-11-19 04:43:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2021-11-19 04:43:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2021-11-19 04:43:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:43:18,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:18,943 INFO L514 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] [2021-11-19 04:43:18,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:19,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:19,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1623479099, now seen corresponding path program 1 times [2021-11-19 04:43:19,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:19,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633631279] [2021-11-19 04:43:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:19,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:19,158 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:19,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:43:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:19,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:43:19,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:19,334 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 [2021-11-19 04:43:19,405 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:43:19,406 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 17 treesize of output 17 [2021-11-19 04:43:19,458 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 [2021-11-19 04:43:19,635 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:43:19,635 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 35 treesize of output 26 [2021-11-19 04:43:19,760 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-19 04:43:19,760 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 [2021-11-19 04:43:20,017 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:43:20,017 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 [2021-11-19 04:43:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:20,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:22,243 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (main_~item~0.offset (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| c_main_~item~0.base (store (store (select |c_#memory_$Pointer$.base| c_main_~item~0.base) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_5)) c_main_~head~0.base) c_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-19 04:43:34,215 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_main_~item~0.offset_54 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~item~0.base) c_main_~item~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) v_main_~item~0.offset_54 (_ bv0 32)) (bvadd (_ bv4 32) v_main_~item~0.offset_54) v_DerPreprocessor_5))) c_main_~head~0.base) c_main_~head~0.offset) (_ bv0 32)))) is different from false [2021-11-19 04:43:34,235 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 350 treesize of output 342 [2021-11-19 04:43:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:34,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:34,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633631279] [2021-11-19 04:43:34,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633631279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:34,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:43:34,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-11-19 04:43:34,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82585942] [2021-11-19 04:43:34,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:34,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:43:34,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:43:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=192, Unknown=5, NotChecked=58, Total=306 [2021-11-19 04:43:34,631 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:39,926 INFO L93 Difference]: Finished difference Result 256 states and 280 transitions. [2021-11-19 04:43:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:43:39,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:43:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:39,928 INFO L225 Difference]: With dead ends: 256 [2021-11-19 04:43:39,929 INFO L226 Difference]: Without dead ends: 256 [2021-11-19 04:43:39,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=140, Invalid=463, Unknown=5, NotChecked=94, Total=702 [2021-11-19 04:43:39,930 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 433 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 514 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:39,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 845 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 329 Invalid, 0 Unknown, 514 Unchecked, 0.8s Time] [2021-11-19 04:43:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-19 04:43:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 171. [2021-11-19 04:43:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.338235294117647) internal successors, (182), 167 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 185 transitions. [2021-11-19 04:43:39,936 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 185 transitions. Word has length 31 [2021-11-19 04:43:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 185 transitions. [2021-11-19 04:43:39,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 185 transitions. [2021-11-19 04:43:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 04:43:39,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:39,938 INFO L514 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] [2021-11-19 04:43:39,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:40,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:40,150 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:40,150 INFO L85 PathProgramCache]: Analyzing trace with hash -931329674, now seen corresponding path program 1 times [2021-11-19 04:43:40,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:40,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771193527] [2021-11-19 04:43:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:40,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:40,152 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:40,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:43:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:40,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:43:40,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:40,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:40,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:43:40,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771193527] [2021-11-19 04:43:40,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771193527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:40,415 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:40,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:43:40,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179242597] [2021-11-19 04:43:40,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:40,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:43:40,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:43:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:43:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:43:40,418 INFO L87 Difference]: Start difference. First operand 171 states and 185 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:40,456 INFO L93 Difference]: Finished difference Result 213 states and 226 transitions. [2021-11-19 04:43:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:43:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-19 04:43:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:40,458 INFO L225 Difference]: With dead ends: 213 [2021-11-19 04:43:40,458 INFO L226 Difference]: Without dead ends: 213 [2021-11-19 04:43:40,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:43:40,459 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 52 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:40,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 245 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:43:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-19 04:43:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 173. [2021-11-19 04:43:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 1.3043478260869565) internal successors, (180), 169 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2021-11-19 04:43:40,466 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 32 [2021-11-19 04:43:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:40,467 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2021-11-19 04:43:40,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2021-11-19 04:43:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 04:43:40,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:40,470 INFO L514 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] [2021-11-19 04:43:40,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:40,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:43:40,682 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:43:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 178014059, now seen corresponding path program 1 times [2021-11-19 04:43:40,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:43:40,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835710481] [2021-11-19 04:43:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:40,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:43:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:43:40,684 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:43:40,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:43:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:40,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 04:43:40,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:40,853 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 [2021-11-19 04:43:40,948 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:43:40,948 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 26 treesize of output 33 [2021-11-19 04:43:41,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 04:43:41,302 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:43:41,303 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 41 treesize of output 32 [2021-11-19 04:43:41,470 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-19 04:43:41,470 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 [2021-11-19 04:43:42,043 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:43:42,044 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 59 treesize of output 42 [2021-11-19 04:43:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:42,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:07,882 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 1922 treesize of output 1890 [2021-11-19 04:45:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:45:03,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:45:03,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835710481] [2021-11-19 04:45:03,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835710481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:45:03,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:45:03,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-19 04:45:03,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011622531] [2021-11-19 04:45:03,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:45:03,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 04:45:03,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:45:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 04:45:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=359, Unknown=12, NotChecked=0, Total=462 [2021-11-19 04:45:03,227 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:45:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:45:03,274 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2021-11-19 04:45:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:45:03,275 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-19 04:45:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:45:03,277 INFO L225 Difference]: With dead ends: 185 [2021-11-19 04:45:03,277 INFO L226 Difference]: Without dead ends: 185 [2021-11-19 04:45:03,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=91, Invalid=359, Unknown=12, NotChecked=0, Total=462 [2021-11-19 04:45:03,278 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 39 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:45:03,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 866 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 250 Unchecked, 0.0s Time] [2021-11-19 04:45:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-19 04:45:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-11-19 04:45:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 178 states have internal predecessors, (192), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:45:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 195 transitions. [2021-11-19 04:45:03,284 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 195 transitions. Word has length 39 [2021-11-19 04:45:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:45:03,285 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 195 transitions. [2021-11-19 04:45:03,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 22 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:45:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 195 transitions. [2021-11-19 04:45:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 04:45:03,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:45:03,286 INFO L514 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] [2021-11-19 04:45:03,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:45:03,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:45:03,498 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:45:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:45:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 178014060, now seen corresponding path program 1 times [2021-11-19 04:45:03,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:45:03,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266549984] [2021-11-19 04:45:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:03,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:45:03,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:45:03,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:45:03,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:45:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:03,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 04:45:03,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:45:03,641 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 [2021-11-19 04:45:03,715 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:45:03,715 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 18 treesize of output 18 [2021-11-19 04:45:03,730 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 [2021-11-19 04:45:03,780 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 [2021-11-19 04:45:03,793 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 [2021-11-19 04:45:04,005 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:45:04,005 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 19 treesize of output 18 [2021-11-19 04:45:04,047 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:45:04,047 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 36 treesize of output 27 [2021-11-19 04:45:04,234 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-19 04:45:04,234 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 109 treesize of output 78 [2021-11-19 04:45:04,284 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-19 04:45:04,284 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 78 treesize of output 53 [2021-11-19 04:45:04,874 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:45:04,874 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 61 treesize of output 40 [2021-11-19 04:45:04,882 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:45:04,883 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 31 treesize of output 19 [2021-11-19 04:45:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:45:04,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:45:33,313 WARN L227 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 04:45:47,675 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 462 treesize of output 458 [2021-11-19 04:45:47,684 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 3390 treesize of output 3326 [2021-11-19 04:49:51,137 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 394 treesize of output 378 [2021-11-19 04:49:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:49:52,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:49:52,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266549984] [2021-11-19 04:49:52,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266549984] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:49:52,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:49:52,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-11-19 04:49:52,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745660586] [2021-11-19 04:49:52,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:49:52,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 04:49:52,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:49:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 04:49:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=349, Unknown=7, NotChecked=0, Total=420 [2021-11-19 04:49:52,269 INFO L87 Difference]: Start difference. First operand 182 states and 195 transitions. Second operand has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:49:54,133 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2021-11-19 04:49:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:49:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-19 04:49:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:49:54,136 INFO L225 Difference]: With dead ends: 197 [2021-11-19 04:49:54,136 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 04:49:54,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=85, Invalid=460, Unknown=7, NotChecked=0, Total=552 [2021-11-19 04:49:54,137 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 40 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:49:54,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 699 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 286 Invalid, 0 Unknown, 88 Unchecked, 1.5s Time] [2021-11-19 04:49:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 04:49:54,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2021-11-19 04:49:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 154 states have (on average 1.2987012987012987) internal successors, (200), 185 states have internal predecessors, (200), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 203 transitions. [2021-11-19 04:49:54,144 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 203 transitions. Word has length 39 [2021-11-19 04:49:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:49:54,144 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 203 transitions. [2021-11-19 04:49:54,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 21 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 203 transitions. [2021-11-19 04:49:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 04:49:54,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:49:54,146 INFO L514 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, 1, 1] [2021-11-19 04:49:54,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:49:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:49:54,362 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr62REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:49:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:49:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -727217955, now seen corresponding path program 1 times [2021-11-19 04:49:54,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:49:54,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602325802] [2021-11-19 04:49:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:49:54,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:49:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:49:54,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:49:54,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:49:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:49:54,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:49:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:49:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:49:54,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:49:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:49:54,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:49:54,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602325802] [2021-11-19 04:49:54,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602325802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:49:54,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:49:54,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:49:54,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105786279] [2021-11-19 04:49:54,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:49:54,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:49:54,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:49:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:49:54,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:49:54,717 INFO L87 Difference]: Start difference. First operand 189 states and 203 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:49:54,809 INFO L93 Difference]: Finished difference Result 197 states and 206 transitions. [2021-11-19 04:49:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:49:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-19 04:49:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:49:54,811 INFO L225 Difference]: With dead ends: 197 [2021-11-19 04:49:54,811 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 04:49:54,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:49:54,812 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:49:54,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 355 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:49:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 04:49:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 163. [2021-11-19 04:49:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 159 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-11-19 04:49:54,819 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 41 [2021-11-19 04:49:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:49:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-11-19 04:49:54,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:49:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-11-19 04:49:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 04:49:54,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:49:54,821 INFO L514 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, 1, 1, 1] [2021-11-19 04:49:54,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-19 04:49:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:49:55,036 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr61ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:49:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:49:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1067412346, now seen corresponding path program 1 times [2021-11-19 04:49:55,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:49:55,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163477328] [2021-11-19 04:49:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:49:55,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:49:55,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:49:55,038 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:49:55,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 04:49:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:49:55,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 04:49:55,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:49:55,193 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 [2021-11-19 04:49:55,318 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:49:55,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-19 04:49:55,375 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 [2021-11-19 04:49:55,385 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 [2021-11-19 04:49:55,591 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:49:55,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-11-19 04:49:55,625 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 26 treesize of output 21 [2021-11-19 04:49:55,759 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:49:55,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-11-19 04:49:55,765 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 84 treesize of output 76 [2021-11-19 04:49:55,773 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:49:55,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 55 [2021-11-19 04:49:56,327 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:49:56,327 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 63 treesize of output 42 [2021-11-19 04:49:56,333 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:49:56,333 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 33 treesize of output 21 [2021-11-19 04:49:56,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-19 04:49:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:49:56,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:49:56,891 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 99 treesize of output 85 [2021-11-19 04:49:58,040 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 340 treesize of output 332 [2021-11-19 04:49:58,689 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 165 treesize of output 161 [2021-11-19 04:50:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:03,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:50:03,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163477328] [2021-11-19 04:50:03,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163477328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:50:03,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:50:03,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-11-19 04:50:03,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132386799] [2021-11-19 04:50:03,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:50:03,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 04:50:03,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:50:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 04:50:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=534, Unknown=2, NotChecked=0, Total=600 [2021-11-19 04:50:03,414 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:50:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:50:06,526 INFO L93 Difference]: Finished difference Result 253 states and 264 transitions. [2021-11-19 04:50:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 04:50:06,527 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-11-19 04:50:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:50:06,528 INFO L225 Difference]: With dead ends: 253 [2021-11-19 04:50:06,528 INFO L226 Difference]: Without dead ends: 253 [2021-11-19 04:50:06,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=204, Invalid=1276, Unknown=2, NotChecked=0, Total=1482 [2021-11-19 04:50:06,530 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 631 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:50:06,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 1236 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 682 Invalid, 0 Unknown, 550 Unchecked, 1.9s Time] [2021-11-19 04:50:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-19 04:50:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 163. [2021-11-19 04:50:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 159 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:50:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 170 transitions. [2021-11-19 04:50:06,537 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 170 transitions. Word has length 42 [2021-11-19 04:50:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:50:06,537 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 170 transitions. [2021-11-19 04:50:06,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:50:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 170 transitions. [2021-11-19 04:50:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 04:50:06,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:06,539 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:06,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 04:50:06,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:50:06,753 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr64REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 65 more)] === [2021-11-19 04:50:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -259639262, now seen corresponding path program 1 times [2021-11-19 04:50:06,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:50:06,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624180413] [2021-11-19 04:50:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:06,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:50:06,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:50:06,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:50:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f1f2891-9293-46a4-a6b2-6dd170eff627/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 04:50:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:06,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 04:50:06,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:50:06,895 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 [2021-11-19 04:50:06,987 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:50:06,988 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 [2021-11-19 04:50:07,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 04:50:07,306 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-19 04:50:07,306 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 43 treesize of output 34 [2021-11-19 04:50:07,483 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-19 04:50:07,483 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 68 treesize of output 53 [2021-11-19 04:50:08,136 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-19 04:50:08,137 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 44 treesize of output 27 [2021-11-19 04:50:08,325 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-19 04:50:08,326 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 44 treesize of output 47 [2021-11-19 04:50:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:50:18,926 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~item~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| c_main_~head~0.base (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem4.base| (store (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem4.base|) main_~item~0.offset (_ bv0 32)) (bvadd (_ bv4 32) main_~item~0.offset) v_DerPreprocessor_11)) c_main_~head~0.base) c_main_~head~0.offset)))))))))))))) (_ bv1 1)))) is different from false [2021-11-19 04:50:28,010 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 662 treesize of output 654