./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:57:55,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:57:55,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:57:55,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:57:55,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:57:55,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:57:55,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:57:55,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:57:55,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:57:55,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:57:55,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:57:55,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:57:55,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:57:55,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:57:55,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:57:55,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:57:55,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:57:55,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:57:55,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:57:55,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:57:55,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:57:55,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:57:55,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:57:55,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:57:55,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:57:55,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:57:55,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:57:55,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:57:55,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:57:55,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:57:55,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:57:55,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:57:55,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:57:55,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:57:55,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:57:55,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:57:55,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:57:55,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:57:55,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:57:55,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:57:55,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:57:55,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:57:56,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:57:56,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:57:56,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:57:56,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:57:56,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:57:56,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:57:56,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:57:56,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:57:56,002 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:57:56,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:57:56,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:57:56,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:57:56,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:57:56,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:57:56,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:57:56,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:57:56,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:57:56,005 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_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2021-12-06 22:57:56,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:57:56,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:57:56,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:57:56,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:57:56,205 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:57:56,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-06 22:57:56,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/data/41753b24f/a948b55c7f0547dca7c95975b6dde345/FLAG521dd9286 [2021-12-06 22:57:56,836 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:57:56,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2021-12-06 22:57:56,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/data/41753b24f/a948b55c7f0547dca7c95975b6dde345/FLAG521dd9286 [2021-12-06 22:57:57,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/data/41753b24f/a948b55c7f0547dca7c95975b6dde345 [2021-12-06 22:57:57,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:57:57,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:57:57,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:57:57,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:57:57,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:57:57,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:57:57" (1/1) ... [2021-12-06 22:57:57,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa9162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:57, skipping insertion in model container [2021-12-06 22:57:57,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:57:57" (1/1) ... [2021-12-06 22:57:57,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:57:57,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:57:57,543 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_7871b460-59c2-4299-8401-341168c45a03/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-12-06 22:57:57,548 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_7871b460-59c2-4299-8401-341168c45a03/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-12-06 22:57:58,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,288 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,289 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,289 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,290 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,303 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,303 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 22:57:58,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 22:57:58,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 22:57:58,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 22:57:58,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 22:57:58,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 22:57:58,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 22:57:58,629 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 22:57:58,629 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 22:57:58,630 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 22:57:58,759 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 22:57:58,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:57:58,936 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:57:58,950 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_7871b460-59c2-4299-8401-341168c45a03/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2021-12-06 22:57:58,950 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_7871b460-59c2-4299-8401-341168c45a03/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2021-12-06 22:57:58,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:58,994 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:59,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 22:57:59,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 22:57:59,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 22:57:59,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 22:57:59,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 22:57:59,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 22:57:59,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 22:57:59,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 22:57:59,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 22:57:59,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 22:57:59,049 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 22:57:59,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:59,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 22:57:59,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:57:59,326 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:57:59,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59 WrapperNode [2021-12-06 22:57:59,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:57:59,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:57:59,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:57:59,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:57:59,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,471 INFO L137 Inliner]: procedures = 693, calls = 2792, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 879 [2021-12-06 22:57:59,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:57:59,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:57:59,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:57:59,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:57:59,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:57:59,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:57:59,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:57:59,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:57:59,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (1/1) ... [2021-12-06 22:57:59,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:57:59,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:59,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:57:59,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:57:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-06 22:57:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-06 22:57:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-06 22:57:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-06 22:57:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-06 22:57:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-06 22:57:59,616 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 22:57:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 22:57:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:57:59,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:57:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 22:57:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:57:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-06 22:57:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-06 22:57:59,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:57:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 22:57:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 22:57:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-06 22:57:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-06 22:57:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:57:59,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:57:59,779 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:57:59,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:58:00,669 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:58:00,675 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:58:00,675 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:58:00,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:58:00 BoogieIcfgContainer [2021-12-06 22:58:00,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:58:00,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:58:00,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:58:00,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:58:00,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:57:57" (1/3) ... [2021-12-06 22:58:00,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645d7e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:58:00, skipping insertion in model container [2021-12-06 22:58:00,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:59" (2/3) ... [2021-12-06 22:58:00,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645d7e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:58:00, skipping insertion in model container [2021-12-06 22:58:00,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:58:00" (3/3) ... [2021-12-06 22:58:00,682 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2021-12-06 22:58:00,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:58:00,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:58:00,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:58:00,726 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:58:00,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:58:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 22:58:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 22:58:00,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:00,749 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:00,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1812998439, now seen corresponding path program 1 times [2021-12-06 22:58:00,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:00,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058131916] [2021-12-06 22:58:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:00,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:58:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:58:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:58:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:58:01,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:01,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058131916] [2021-12-06 22:58:01,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058131916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:01,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:01,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:58:01,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038212177] [2021-12-06 22:58:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:01,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:58:01,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:58:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:58:01,282 INFO L87 Difference]: Start difference. First operand has 131 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 89 states have internal predecessors, (112), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:58:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:01,450 INFO L93 Difference]: Finished difference Result 253 states and 352 transitions. [2021-12-06 22:58:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:58:01,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2021-12-06 22:58:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:01,462 INFO L225 Difference]: With dead ends: 253 [2021-12-06 22:58:01,462 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 22:58:01,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:58:01,469 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 55 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:01,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:58:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 22:58:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-06 22:58:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 85 states have internal predecessors, (106), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-06 22:58:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2021-12-06 22:58:01,507 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 72 [2021-12-06 22:58:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:01,509 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2021-12-06 22:58:01,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:58:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2021-12-06 22:58:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 22:58:01,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:01,512 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:01,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:58:01,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -795992417, now seen corresponding path program 1 times [2021-12-06 22:58:01,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:01,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431790208] [2021-12-06 22:58:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:01,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:58:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:58:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:58:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:58:01,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:01,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431790208] [2021-12-06 22:58:01,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431790208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:01,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:01,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:58:01,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901666602] [2021-12-06 22:58:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:01,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:58:01,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:58:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:01,759 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:58:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:02,008 INFO L93 Difference]: Finished difference Result 213 states and 284 transitions. [2021-12-06 22:58:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:58:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 72 [2021-12-06 22:58:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:02,013 INFO L225 Difference]: With dead ends: 213 [2021-12-06 22:58:02,013 INFO L226 Difference]: Without dead ends: 129 [2021-12-06 22:58:02,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:58:02,016 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 108 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:02,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 456 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-06 22:58:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-12-06 22:58:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.255813953488372) internal successors, (108), 88 states have internal predecessors, (108), 31 states have call successors, (31), 10 states have call predecessors, (31), 11 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-06 22:58:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2021-12-06 22:58:02,031 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 72 [2021-12-06 22:58:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:02,031 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2021-12-06 22:58:02,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:58:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2021-12-06 22:58:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:58:02,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:02,034 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:02,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:58:02,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -565003148, now seen corresponding path program 1 times [2021-12-06 22:58:02,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:02,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692633299] [2021-12-06 22:58:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:02,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:58:02,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692633299] [2021-12-06 22:58:02,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692633299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:02,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:02,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:58:02,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516008029] [2021-12-06 22:58:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:02,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:58:02,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:58:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:58:02,405 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 22:58:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:02,806 INFO L93 Difference]: Finished difference Result 225 states and 299 transitions. [2021-12-06 22:58:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:02,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 78 [2021-12-06 22:58:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:02,808 INFO L225 Difference]: With dead ends: 225 [2021-12-06 22:58:02,809 INFO L226 Difference]: Without dead ends: 167 [2021-12-06 22:58:02,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:58:02,810 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 226 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:02,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 665 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:58:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-06 22:58:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 146. [2021-12-06 22:58:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 100 states have internal predecessors, (123), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2021-12-06 22:58:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 194 transitions. [2021-12-06 22:58:02,824 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 194 transitions. Word has length 78 [2021-12-06 22:58:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:02,825 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 194 transitions. [2021-12-06 22:58:02,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 22:58:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 194 transitions. [2021-12-06 22:58:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:58:02,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:02,827 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:02,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:58:02,827 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1924525814, now seen corresponding path program 1 times [2021-12-06 22:58:02,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:02,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681567879] [2021-12-06 22:58:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:02,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:58:03,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:03,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681567879] [2021-12-06 22:58:03,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681567879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:03,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:03,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:58:03,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140461617] [2021-12-06 22:58:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:03,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:58:03,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:58:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:58:03,073 INFO L87 Difference]: Start difference. First operand 146 states and 194 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:58:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:03,276 INFO L93 Difference]: Finished difference Result 250 states and 338 transitions. [2021-12-06 22:58:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:58:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2021-12-06 22:58:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:03,278 INFO L225 Difference]: With dead ends: 250 [2021-12-06 22:58:03,278 INFO L226 Difference]: Without dead ends: 194 [2021-12-06 22:58:03,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:58:03,280 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 67 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:03,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 441 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-06 22:58:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2021-12-06 22:58:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.2578125) internal successors, (161), 130 states have internal predecessors, (161), 51 states have call successors, (51), 11 states have call predecessors, (51), 12 states have return successors, (54), 50 states have call predecessors, (54), 50 states have call successors, (54) [2021-12-06 22:58:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2021-12-06 22:58:03,296 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 78 [2021-12-06 22:58:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:03,297 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2021-12-06 22:58:03,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:58:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2021-12-06 22:58:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:58:03,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:03,299 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:03,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:58:03,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2071762423, now seen corresponding path program 1 times [2021-12-06 22:58:03,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699386936] [2021-12-06 22:58:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:03,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 22:58:03,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:03,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699386936] [2021-12-06 22:58:03,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699386936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:03,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:03,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:58:03,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841484680] [2021-12-06 22:58:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:03,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:58:03,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:58:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:58:03,547 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:03,837 INFO L93 Difference]: Finished difference Result 203 states and 282 transitions. [2021-12-06 22:58:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2021-12-06 22:58:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:03,839 INFO L225 Difference]: With dead ends: 203 [2021-12-06 22:58:03,839 INFO L226 Difference]: Without dead ends: 196 [2021-12-06 22:58:03,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:58:03,840 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 80 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:03,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 870 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-06 22:58:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-12-06 22:58:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 131 states have (on average 1.251908396946565) internal successors, (164), 134 states have internal predecessors, (164), 51 states have call successors, (51), 11 states have call predecessors, (51), 13 states have return successors, (60), 50 states have call predecessors, (60), 50 states have call successors, (60) [2021-12-06 22:58:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 275 transitions. [2021-12-06 22:58:03,856 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 275 transitions. Word has length 90 [2021-12-06 22:58:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:03,856 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 275 transitions. [2021-12-06 22:58:03,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 275 transitions. [2021-12-06 22:58:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 22:58:03,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:03,858 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:03,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:58:03,858 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1055189439, now seen corresponding path program 1 times [2021-12-06 22:58:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509884943] [2021-12-06 22:58:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:03,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:58:04,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509884943] [2021-12-06 22:58:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509884943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:04,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:04,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:58:04,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855111550] [2021-12-06 22:58:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:04,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:58:04,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:58:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:04,125 INFO L87 Difference]: Start difference. First operand 196 states and 275 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:04,404 INFO L93 Difference]: Finished difference Result 362 states and 524 transitions. [2021-12-06 22:58:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:58:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 94 [2021-12-06 22:58:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:04,406 INFO L225 Difference]: With dead ends: 362 [2021-12-06 22:58:04,406 INFO L226 Difference]: Without dead ends: 221 [2021-12-06 22:58:04,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:58:04,408 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 120 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:04,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 516 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-06 22:58:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2021-12-06 22:58:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 139 states have internal predecessors, (171), 51 states have call successors, (51), 11 states have call predecessors, (51), 13 states have return successors, (60), 50 states have call predecessors, (60), 50 states have call successors, (60) [2021-12-06 22:58:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 282 transitions. [2021-12-06 22:58:04,422 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 282 transitions. Word has length 94 [2021-12-06 22:58:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:04,422 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 282 transitions. [2021-12-06 22:58:04,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 282 transitions. [2021-12-06 22:58:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 22:58:04,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:04,424 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:04,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:58:04,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:04,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1313354877, now seen corresponding path program 1 times [2021-12-06 22:58:04,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:04,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115153705] [2021-12-06 22:58:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:04,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:04,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115153705] [2021-12-06 22:58:04,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115153705] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137333748] [2021-12-06 22:58:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:04,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:04,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:04,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:58:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 22:58:05,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:05,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 22:58:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:58:05,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:58:05,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137333748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:05,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:58:05,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 20 [2021-12-06 22:58:05,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833195186] [2021-12-06 22:58:05,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:05,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:58:05,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:58:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:58:05,707 INFO L87 Difference]: Start difference. First operand 201 states and 282 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 22:58:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:05,749 INFO L93 Difference]: Finished difference Result 373 states and 521 transitions. [2021-12-06 22:58:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:58:05,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 94 [2021-12-06 22:58:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:05,752 INFO L225 Difference]: With dead ends: 373 [2021-12-06 22:58:05,752 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 22:58:05,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:58:05,753 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 20 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:05,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 941 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2021-12-06 22:58:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 22:58:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-12-06 22:58:05,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 154 states have (on average 1.2597402597402598) internal successors, (194), 157 states have internal predecessors, (194), 51 states have call successors, (51), 12 states have call predecessors, (51), 14 states have return successors, (60), 50 states have call predecessors, (60), 50 states have call successors, (60) [2021-12-06 22:58:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 305 transitions. [2021-12-06 22:58:05,766 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 305 transitions. Word has length 94 [2021-12-06 22:58:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:05,766 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 305 transitions. [2021-12-06 22:58:05,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 22:58:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 305 transitions. [2021-12-06 22:58:05,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 22:58:05,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:05,768 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:05,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:58:05,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:05,968 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1354029627, now seen corresponding path program 1 times [2021-12-06 22:58:05,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:05,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623622930] [2021-12-06 22:58:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:05,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:58:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:58:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:58:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 22:58:06,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:06,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623622930] [2021-12-06 22:58:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623622930] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:06,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488632557] [2021-12-06 22:58:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:06,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:06,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:06,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:06,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:58:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:58:06,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:58:06,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:58:06,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488632557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:06,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:58:06,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 22:58:06,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416814153] [2021-12-06 22:58:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:06,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:58:06,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:58:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:58:06,570 INFO L87 Difference]: Start difference. First operand 220 states and 305 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:06,596 INFO L93 Difference]: Finished difference Result 379 states and 533 transitions. [2021-12-06 22:58:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:58:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2021-12-06 22:58:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:06,599 INFO L225 Difference]: With dead ends: 379 [2021-12-06 22:58:06,599 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 22:58:06,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:06,601 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 20 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:06,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 493 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:58:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 22:58:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 212. [2021-12-06 22:58:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 147 states have (on average 1.2585034013605443) internal successors, (185), 149 states have internal predecessors, (185), 51 states have call successors, (51), 12 states have call predecessors, (51), 13 states have return successors, (58), 50 states have call predecessors, (58), 50 states have call successors, (58) [2021-12-06 22:58:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2021-12-06 22:58:06,618 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 94 [2021-12-06 22:58:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2021-12-06 22:58:06,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2021-12-06 22:58:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:58:06,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:06,621 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:06,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:58:06,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:06,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:06,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -805510601, now seen corresponding path program 1 times [2021-12-06 22:58:06,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:06,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533971090] [2021-12-06 22:58:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:06,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:58:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:58:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:58:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:58:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:58:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 22:58:07,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533971090] [2021-12-06 22:58:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533971090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914031087] [2021-12-06 22:58:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:07,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:07,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:07,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:58:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:58:07,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 22:58:07,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:58:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914031087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:07,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:58:07,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-06 22:58:07,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193906817] [2021-12-06 22:58:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:58:07,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:58:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:58:07,490 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:58:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:07,578 INFO L93 Difference]: Finished difference Result 367 states and 515 transitions. [2021-12-06 22:58:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:58:07,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-06 22:58:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:07,580 INFO L225 Difference]: With dead ends: 367 [2021-12-06 22:58:07,580 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 22:58:07,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:58:07,581 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:07,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1191 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:58:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 22:58:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-12-06 22:58:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 151 states have (on average 1.2516556291390728) internal successors, (189), 154 states have internal predecessors, (189), 51 states have call successors, (51), 12 states have call predecessors, (51), 14 states have return successors, (63), 50 states have call predecessors, (63), 50 states have call successors, (63) [2021-12-06 22:58:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 303 transitions. [2021-12-06 22:58:07,592 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 303 transitions. Word has length 98 [2021-12-06 22:58:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:07,592 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 303 transitions. [2021-12-06 22:58:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:58:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 303 transitions. [2021-12-06 22:58:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:07,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:07,594 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:07,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:58:07,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:07,795 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:07,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:07,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1170955310, now seen corresponding path program 1 times [2021-12-06 22:58:07,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:07,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828115448] [2021-12-06 22:58:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:07,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 22:58:08,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828115448] [2021-12-06 22:58:08,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828115448] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990847467] [2021-12-06 22:58:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:08,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:08,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:08,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:08,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:58:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:58:08,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:58:08,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:58:08,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990847467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:08,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:58:08,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 22:58:08,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440448432] [2021-12-06 22:58:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:08,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:58:08,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:58:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:58:08,405 INFO L87 Difference]: Start difference. First operand 217 states and 303 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:08,423 INFO L93 Difference]: Finished difference Result 377 states and 535 transitions. [2021-12-06 22:58:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:58:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2021-12-06 22:58:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:08,425 INFO L225 Difference]: With dead ends: 377 [2021-12-06 22:58:08,425 INFO L226 Difference]: Without dead ends: 220 [2021-12-06 22:58:08,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:08,426 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 9 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:08,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 486 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:58:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-06 22:58:08,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2021-12-06 22:58:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 151 states have (on average 1.2384105960264902) internal successors, (187), 154 states have internal predecessors, (187), 51 states have call successors, (51), 12 states have call predecessors, (51), 14 states have return successors, (63), 50 states have call predecessors, (63), 50 states have call successors, (63) [2021-12-06 22:58:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 301 transitions. [2021-12-06 22:58:08,436 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 301 transitions. Word has length 100 [2021-12-06 22:58:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:08,437 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 301 transitions. [2021-12-06 22:58:08,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 301 transitions. [2021-12-06 22:58:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:08,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:08,438 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:08,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:58:08,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:08,639 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1786047986, now seen corresponding path program 1 times [2021-12-06 22:58:08,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:08,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442612375] [2021-12-06 22:58:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:08,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 22:58:08,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442612375] [2021-12-06 22:58:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442612375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:08,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948220624] [2021-12-06 22:58:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:08,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:08,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:58:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:58:09,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 22:58:09,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:58:09,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948220624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:09,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:58:09,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 22:58:09,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860616795] [2021-12-06 22:58:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:09,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:58:09,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:58:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:58:09,171 INFO L87 Difference]: Start difference. First operand 217 states and 301 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:09,190 INFO L93 Difference]: Finished difference Result 383 states and 546 transitions. [2021-12-06 22:58:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:58:09,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2021-12-06 22:58:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:09,192 INFO L225 Difference]: With dead ends: 383 [2021-12-06 22:58:09,192 INFO L226 Difference]: Without dead ends: 226 [2021-12-06 22:58:09,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:09,193 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 34 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:09,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 484 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:58:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-06 22:58:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2021-12-06 22:58:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 147 states have (on average 1.2244897959183674) internal successors, (180), 150 states have internal predecessors, (180), 51 states have call successors, (51), 12 states have call predecessors, (51), 14 states have return successors, (63), 50 states have call predecessors, (63), 50 states have call successors, (63) [2021-12-06 22:58:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 294 transitions. [2021-12-06 22:58:09,204 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 294 transitions. Word has length 100 [2021-12-06 22:58:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:09,204 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 294 transitions. [2021-12-06 22:58:09,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:58:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 294 transitions. [2021-12-06 22:58:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:09,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:09,206 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:09,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:58:09,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:09,408 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1106775732, now seen corresponding path program 1 times [2021-12-06 22:58:09,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840604331] [2021-12-06 22:58:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:58:10,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840604331] [2021-12-06 22:58:10,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840604331] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:10,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127212572] [2021-12-06 22:58:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:10,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:10,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:10,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:58:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 22:58:10,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:58:11,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:58:11,498 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-06 22:58:11,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-06 22:58:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:11,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127212572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:58:11,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:58:11,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 24 [2021-12-06 22:58:11,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441950456] [2021-12-06 22:58:11,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:58:11,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 22:58:11,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 22:58:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:58:11,540 INFO L87 Difference]: Start difference. First operand 213 states and 294 transitions. Second operand has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 22:58:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:12,482 INFO L93 Difference]: Finished difference Result 259 states and 342 transitions. [2021-12-06 22:58:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:58:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 100 [2021-12-06 22:58:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:12,484 INFO L225 Difference]: With dead ends: 259 [2021-12-06 22:58:12,484 INFO L226 Difference]: Without dead ends: 231 [2021-12-06 22:58:12,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 203 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 22:58:12,485 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 350 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:12,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 903 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 926 Invalid, 0 Unknown, 325 Unchecked, 0.6s Time] [2021-12-06 22:58:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-06 22:58:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 223. [2021-12-06 22:58:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 155 states have (on average 1.2129032258064516) internal successors, (188), 158 states have internal predecessors, (188), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (63), 50 states have call predecessors, (63), 50 states have call successors, (63) [2021-12-06 22:58:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 302 transitions. [2021-12-06 22:58:12,495 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 302 transitions. Word has length 100 [2021-12-06 22:58:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:12,496 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 302 transitions. [2021-12-06 22:58:12,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 22:58:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 302 transitions. [2021-12-06 22:58:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:12,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:12,497 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:12,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:58:12,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:12,699 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 61814546, now seen corresponding path program 1 times [2021-12-06 22:58:12,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:12,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689047753] [2021-12-06 22:58:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:12,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 22:58:13,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689047753] [2021-12-06 22:58:13,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689047753] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:13,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877247713] [2021-12-06 22:58:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:13,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:13,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:13,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:58:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 22:58:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:58:14,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:58:14,711 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 22:58:14,711 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 39 treesize of output 1 [2021-12-06 22:58:14,855 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-12-06 22:58:14,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-12-06 22:58:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:14,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877247713] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:58:14,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:58:14,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 33 [2021-12-06 22:58:14,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356836494] [2021-12-06 22:58:14,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:58:14,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 22:58:14,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 22:58:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:58:14,939 INFO L87 Difference]: Start difference. First operand 223 states and 302 transitions. Second operand has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 6 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 22:58:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:17,194 INFO L93 Difference]: Finished difference Result 353 states and 508 transitions. [2021-12-06 22:58:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 22:58:17,194 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 6 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 100 [2021-12-06 22:58:17,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:17,197 INFO L225 Difference]: With dead ends: 353 [2021-12-06 22:58:17,197 INFO L226 Difference]: Without dead ends: 341 [2021-12-06 22:58:17,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 193 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=618, Invalid=2804, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 22:58:17,198 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 313 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:17,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1823 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1747 Invalid, 0 Unknown, 574 Unchecked, 1.2s Time] [2021-12-06 22:58:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-06 22:58:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 334. [2021-12-06 22:58:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 232 states have (on average 1.2155172413793103) internal successors, (282), 235 states have internal predecessors, (282), 81 states have call successors, (81), 17 states have call predecessors, (81), 20 states have return successors, (117), 81 states have call predecessors, (117), 80 states have call successors, (117) [2021-12-06 22:58:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 480 transitions. [2021-12-06 22:58:17,215 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 480 transitions. Word has length 100 [2021-12-06 22:58:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:17,216 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 480 transitions. [2021-12-06 22:58:17,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 6 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 22:58:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 480 transitions. [2021-12-06 22:58:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:17,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:17,217 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:17,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:58:17,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:58:17,419 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash 319979984, now seen corresponding path program 1 times [2021-12-06 22:58:17,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719587337] [2021-12-06 22:58:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:17,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:58:17,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:17,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719587337] [2021-12-06 22:58:17,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719587337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:17,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:17,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:58:17,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676727487] [2021-12-06 22:58:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:17,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:58:17,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:58:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:58:17,644 INFO L87 Difference]: Start difference. First operand 334 states and 480 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:17,910 INFO L93 Difference]: Finished difference Result 490 states and 688 transitions. [2021-12-06 22:58:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:58:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 100 [2021-12-06 22:58:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:17,913 INFO L225 Difference]: With dead ends: 490 [2021-12-06 22:58:17,913 INFO L226 Difference]: Without dead ends: 325 [2021-12-06 22:58:17,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:58:17,914 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 78 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:17,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 515 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-06 22:58:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-12-06 22:58:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 224 states have (on average 1.2142857142857142) internal successors, (272), 226 states have internal predecessors, (272), 81 states have call successors, (81), 17 states have call predecessors, (81), 19 states have return successors, (116), 81 states have call predecessors, (116), 80 states have call successors, (116) [2021-12-06 22:58:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 469 transitions. [2021-12-06 22:58:17,931 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 469 transitions. Word has length 100 [2021-12-06 22:58:17,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:17,931 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 469 transitions. [2021-12-06 22:58:17,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 469 transitions. [2021-12-06 22:58:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:58:17,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:17,933 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:17,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:58:17,933 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 102489296, now seen corresponding path program 1 times [2021-12-06 22:58:17,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:17,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801330572] [2021-12-06 22:58:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:17,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:18,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:18,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801330572] [2021-12-06 22:58:18,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801330572] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:18,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431175094] [2021-12-06 22:58:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:18,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:18,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:18,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:58:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:18,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 22:58:18,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:58:19,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:58:20,386 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-12-06 22:58:20,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 48 [2021-12-06 22:58:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431175094] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:58:20,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:58:20,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 30 [2021-12-06 22:58:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759947113] [2021-12-06 22:58:20,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:58:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 22:58:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 22:58:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-12-06 22:58:20,931 INFO L87 Difference]: Start difference. First operand 325 states and 469 transitions. Second operand has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 29 states have internal predecessors, (130), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 22:58:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:23,605 INFO L93 Difference]: Finished difference Result 349 states and 492 transitions. [2021-12-06 22:58:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:58:23,605 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 29 states have internal predecessors, (130), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 100 [2021-12-06 22:58:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:23,607 INFO L225 Difference]: With dead ends: 349 [2021-12-06 22:58:23,608 INFO L226 Difference]: Without dead ends: 337 [2021-12-06 22:58:23,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 198 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=382, Invalid=1780, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 22:58:23,609 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 240 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:23,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 994 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1090 Invalid, 0 Unknown, 195 Unchecked, 1.0s Time] [2021-12-06 22:58:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-06 22:58:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 320. [2021-12-06 22:58:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 220 states have (on average 1.2181818181818183) internal successors, (268), 221 states have internal predecessors, (268), 81 states have call successors, (81), 17 states have call predecessors, (81), 18 states have return successors, (107), 81 states have call predecessors, (107), 80 states have call successors, (107) [2021-12-06 22:58:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 456 transitions. [2021-12-06 22:58:23,628 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 456 transitions. Word has length 100 [2021-12-06 22:58:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:23,628 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 456 transitions. [2021-12-06 22:58:23,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.333333333333333) internal successors, (130), 29 states have internal predecessors, (130), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-06 22:58:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 456 transitions. [2021-12-06 22:58:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 22:58:23,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:23,630 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:23,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:58:23,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:58:23,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -430654057, now seen corresponding path program 1 times [2021-12-06 22:58:23,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:23,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405062311] [2021-12-06 22:58:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:23,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 22:58:24,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405062311] [2021-12-06 22:58:24,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405062311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:24,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:24,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:58:24,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903939945] [2021-12-06 22:58:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:24,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:58:24,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:58:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:58:24,042 INFO L87 Difference]: Start difference. First operand 320 states and 456 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:24,374 INFO L93 Difference]: Finished difference Result 331 states and 473 transitions. [2021-12-06 22:58:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:58:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 102 [2021-12-06 22:58:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:24,376 INFO L225 Difference]: With dead ends: 331 [2021-12-06 22:58:24,376 INFO L226 Difference]: Without dead ends: 289 [2021-12-06 22:58:24,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:58:24,377 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 84 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:24,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1092 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:58:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-06 22:58:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2021-12-06 22:58:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 197 states have (on average 1.2030456852791878) internal successors, (237), 199 states have internal predecessors, (237), 69 states have call successors, (69), 17 states have call predecessors, (69), 18 states have return successors, (86), 68 states have call predecessors, (86), 67 states have call successors, (86) [2021-12-06 22:58:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 392 transitions. [2021-12-06 22:58:24,392 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 392 transitions. Word has length 102 [2021-12-06 22:58:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:24,392 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 392 transitions. [2021-12-06 22:58:24,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 22:58:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 392 transitions. [2021-12-06 22:58:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 22:58:24,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:24,393 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:24,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:58:24,394 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:24,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash 704139607, now seen corresponding path program 1 times [2021-12-06 22:58:24,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:24,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653966783] [2021-12-06 22:58:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:24,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:58:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:58:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:58:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:58:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:58:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:58:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:58:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:24,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:24,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653966783] [2021-12-06 22:58:24,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653966783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:24,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:24,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 22:58:24,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70863640] [2021-12-06 22:58:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:24,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 22:58:24,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 22:58:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:58:24,814 INFO L87 Difference]: Start difference. First operand 285 states and 392 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 22:58:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:25,399 INFO L93 Difference]: Finished difference Result 295 states and 406 transitions. [2021-12-06 22:58:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:58:25,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2021-12-06 22:58:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:25,401 INFO L225 Difference]: With dead ends: 295 [2021-12-06 22:58:25,401 INFO L226 Difference]: Without dead ends: 230 [2021-12-06 22:58:25,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:58:25,402 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 177 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:25,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1095 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:58:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-06 22:58:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 167. [2021-12-06 22:58:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 118 states have (on average 1.1864406779661016) internal successors, (140), 120 states have internal predecessors, (140), 33 states have call successors, (33), 14 states have call predecessors, (33), 15 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2021-12-06 22:58:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 209 transitions. [2021-12-06 22:58:25,417 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 209 transitions. Word has length 102 [2021-12-06 22:58:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:25,417 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 209 transitions. [2021-12-06 22:58:25,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 22:58:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 209 transitions. [2021-12-06 22:58:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 22:58:25,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:25,418 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:25,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:58:25,418 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash 523668838, now seen corresponding path program 1 times [2021-12-06 22:58:25,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:25,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300359012] [2021-12-06 22:58:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:25,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:58:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:58:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:58:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:58:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:58:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:58:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:58:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:58:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:58:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:58:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:58:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:58:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:58:25,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:25,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300359012] [2021-12-06 22:58:25,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300359012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:58:25,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014801030] [2021-12-06 22:58:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:25,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:58:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:58:25,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:58:25,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:58:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:26,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:58:26,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:58:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 22:58:26,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:58:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 22:58:26,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014801030] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:58:26,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:58:26,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 23 [2021-12-06 22:58:26,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815443405] [2021-12-06 22:58:26,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:58:26,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 22:58:26,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 22:58:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:58:26,291 INFO L87 Difference]: Start difference. First operand 167 states and 209 transitions. Second operand has 23 states, 21 states have (on average 3.857142857142857) internal successors, (81), 17 states have internal predecessors, (81), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2021-12-06 22:58:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:26,640 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2021-12-06 22:58:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:58:26,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.857142857142857) internal successors, (81), 17 states have internal predecessors, (81), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) Word has length 118 [2021-12-06 22:58:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:26,640 INFO L225 Difference]: With dead ends: 185 [2021-12-06 22:58:26,640 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:58:26,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 22:58:26,642 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 58 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:26,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 348 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:58:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:58:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:58:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:58:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:58:26,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2021-12-06 22:58:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:26,643 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:58:26,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.857142857142857) internal successors, (81), 17 states have internal predecessors, (81), 9 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 11 states have call predecessors, (23), 9 states have call successors, (23) [2021-12-06 22:58:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:58:26,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:58:26,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 22:58:26,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:58:26,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:58:26,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 22:58:30,871 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 22:58:30,871 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (= |old(#length)| |#length|) (or (<= |ensure_string_is_allocated_bounded_length_~len~1#1| (+ (* 18446744073709551616 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616)) 15)) .cse0) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (or (<= (* 18446744073709551616 (div (+ 18446744073709551600 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) .cse0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|))) [2021-12-06 22:58:30,871 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 22:58:30,871 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 22:58:30,871 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-06 22:58:30,872 INFO L861 garLoopResultBuilder]: At program point aws_array_eqENTRY(lines 7684 7704) the Hoare annotation is: true [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L7697(lines 7697 7701) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point aws_array_eqEXIT(lines 7684 7704) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L861 garLoopResultBuilder]: At program point L7686(line 7686) the Hoare annotation is: true [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point L7688(lines 7685 7704) no Hoare annotation was computed. [2021-12-06 22:58:30,872 INFO L858 garLoopResultBuilder]: For program point aws_array_eqFINAL(lines 7684 7704) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L861 garLoopResultBuilder]: At program point L7686-1(line 7686) the Hoare annotation is: true [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7364-6(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7364-4(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7364-3(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7364-8(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L861 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7359 7365) the Hoare annotation is: true [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7359 7365) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-3(line 7361) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-1(line 7361) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7359 7365) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361(lines 7361 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-7(lines 7361 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-6(lines 7361 7362) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-4(lines 7361 7362) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-11(lines 7361 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7361-9(lines 7361 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,873 INFO L858 garLoopResultBuilder]: For program point L7364-2(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L7364(line 7364) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-12-06 22:58:30,874 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-12-06 22:58:30,874 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L854 garLoopResultBuilder]: At program point L9408(line 9408) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point L9408-1(line 9408) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L854 garLoopResultBuilder]: At program point L9408-2(lines 9386 9409) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point L6609(lines 6609 6614) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 22:58:30,875 INFO L854 garLoopResultBuilder]: At program point L6610(line 6610) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) [2021-12-06 22:58:30,875 INFO L861 garLoopResultBuilder]: At program point L9558(line 9558) the Hoare annotation is: true [2021-12-06 22:58:30,875 INFO L858 garLoopResultBuilder]: For program point L6610-3(lines 6610 6612) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L6610-1(lines 6610 6612) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L9551(line 9551) the Hoare annotation is: false [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L9551-1(line 9551) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L6612-1(line 6612) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L6612(line 6612) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L9544(line 9544) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0)) [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L9544-1(line 9544) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-12-06 22:58:30,876 INFO L858 garLoopResultBuilder]: For program point L6613-1(line 6613) no Hoare annotation was computed. [2021-12-06 22:58:30,876 INFO L854 garLoopResultBuilder]: At program point L6613(line 6613) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9388(line 9388) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9388-2(line 9388) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9553(line 9553) the Hoare annotation is: false [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9553-1(line 9553) the Hoare annotation is: false [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9553-2(line 9553) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9388-3(line 9388) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9388-4(line 9388) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9388-5(line 9388) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9389(line 9389) no Hoare annotation was computed. [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9389-2(line 9389) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,877 INFO L854 garLoopResultBuilder]: At program point L9546(line 9546) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) (+ |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) [2021-12-06 22:58:30,877 INFO L858 garLoopResultBuilder]: For program point L9389-3(line 9389) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9538(lines 9538 9557) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L854 garLoopResultBuilder]: At program point L9546-1(line 9546) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse3 (select .cse8 16)) (.cse4 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse2 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse5 (* .cse4 (- 1))) (.cse6 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse7 (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse3) 18446744073709551616))))) (.cse0 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse1 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and (<= |ULTIMATE.start_aws_string_eq_byte_buf_harness_#t~ret1351#1| 0) .cse0 .cse1 (<= 0 |ULTIMATE.start_aws_string_eq_byte_buf_harness_#t~ret1351#1|)) (and .cse2 (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse3 (* (div .cse4 18446744073709551616) 18446744073709551616) .cse5) 18446744073709551616)))) .cse6 .cse7 .cse0 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse1 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse2 (<= 0 (+ .cse4 (* 18446744073709551616 (div .cse5 18446744073709551616)))) .cse6 .cse7 .cse0 .cse1))))) [2021-12-06 22:58:30,878 INFO L854 garLoopResultBuilder]: At program point L9389-4(line 9389) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9546-2(line 9546) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9389-5(line 9389) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9390(lines 9390 9398) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L861 garLoopResultBuilder]: At program point L9539(line 9539) the Hoare annotation is: true [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9539-1(lines 9539 9540) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L861 garLoopResultBuilder]: At program point L9539-2(line 9539) the Hoare annotation is: true [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9539-3(line 9539) no Hoare annotation was computed. [2021-12-06 22:58:30,878 INFO L858 garLoopResultBuilder]: For program point L9539-5(lines 9539 9540) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L854 garLoopResultBuilder]: At program point L9556(line 9556) the Hoare annotation is: (and (<= |ULTIMATE.start_aws_string_eq_byte_buf_harness_#t~ret1360#1| 1) (<= 1 |ULTIMATE.start_aws_string_eq_byte_buf_harness_#t~ret1360#1|) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0)) [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L9556-1(line 9556) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L9399(lines 9399 9407) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L854 garLoopResultBuilder]: At program point L9548(line 9548) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse8 16)) (.cse2 (select .cse8 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0)) (.cse3 (* .cse2 (- 1))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0)) (.cse5 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse1) 18446744073709551616))))) (.cse6 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and .cse0 (<= .cse1 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse1 (* (div .cse2 18446744073709551616) 18446744073709551616) .cse3) 18446744073709551616)))) .cse4 .cse5 .cse6 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse7 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)) (and .cse0 (<= 0 (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)))) .cse4 .cse5 .cse6 .cse7))))) [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L9548-1(lines 9548 9549) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L854 garLoopResultBuilder]: At program point L6600(lines 6598 6601) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.base| 0) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~str~3#1.offset| 0) (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0)) [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L9548-3(lines 9548 9549) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L9548-4(lines 9548 9554) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L854 garLoopResultBuilder]: At program point L9548-6(lines 9548 9554) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|))) (let ((.cse5 (select .cse6 16)) (.cse0 (select .cse6 |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset|))) (let ((.cse1 (* .cse0 (- 1))) (.cse2 (<= .cse5 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse5) 18446744073709551616))))) (.cse3 (not (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| 0))) (.cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.offset| 0))) (or (and (<= 0 (+ .cse0 (* 18446744073709551616 (div .cse1 18446744073709551616)))) .cse2 .cse3 .cse4) (and (<= .cse5 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse5 (* (div .cse0 18446744073709551616) 18446744073709551616) .cse1) 18446744073709551616)))) .cse2 .cse3 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR) 0)) .cse4 (= |ULTIMATE.start_aws_string_eq_byte_buf_harness_~#buf~3#1.base| |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base|) (= |ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.offset| 0)))))) [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-06 22:58:30,879 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-06 22:58:30,882 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:30,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:58:30,891 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-12-06 22:58:30,892 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR [2021-12-06 22:58:30,894 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-12-06 22:58:30,894 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR [2021-12-06 22:58:30,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:58:30 BoogieIcfgContainer [2021-12-06 22:58:30,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:58:30,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:58:30,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:58:30,898 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:58:30,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:58:00" (3/4) ... [2021-12-06 22:58:30,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:58:30,904 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-12-06 22:58:30,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-06 22:58:30,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq [2021-12-06 22:58:30,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-06 22:58:30,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2021-12-06 22:58:30,909 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-12-06 22:58:30,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 22:58:30,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 22:58:30,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-12-06 22:58:30,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-12-06 22:58:30,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 129 nodes and edges [2021-12-06 22:58:30,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2021-12-06 22:58:30,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-12-06 22:58:30,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 22:58:30,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-06 22:58:30,929 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-06 22:58:30,930 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 22:58:30,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:58:30,954 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(max_size) == max_size || 16 == max_size) && !(str == 0)) && !(\result == 0)) && !(\old(max_size) == 16) [2021-12-06 22:58:31,642 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:58:31,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:58:31,642 INFO L158 Benchmark]: Toolchain (without parser) took 34358.91ms. Allocated memory was 94.4MB in the beginning and 287.3MB in the end (delta: 192.9MB). Free memory was 51.6MB in the beginning and 79.5MB in the end (delta: -27.9MB). Peak memory consumption was 197.6MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,643 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 49.7MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:58:31,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2041.52ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.3MB in the beginning and 47.0MB in the end (delta: 4.4MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.90ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 47.0MB in the beginning and 81.8MB in the end (delta: -34.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,643 INFO L158 Benchmark]: Boogie Preprocessor took 79.32ms. Allocated memory is still 136.3MB. Free memory was 81.8MB in the beginning and 77.0MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,643 INFO L158 Benchmark]: RCFGBuilder took 1124.75ms. Allocated memory is still 136.3MB. Free memory was 77.0MB in the beginning and 65.6MB in the end (delta: 11.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,644 INFO L158 Benchmark]: TraceAbstraction took 30219.46ms. Allocated memory was 136.3MB in the beginning and 287.3MB in the end (delta: 151.0MB). Free memory was 64.5MB in the beginning and 69.6MB in the end (delta: -5.1MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,644 INFO L158 Benchmark]: Witness Printer took 744.38ms. Allocated memory is still 287.3MB. Free memory was 69.6MB in the beginning and 79.5MB in the end (delta: -10.0MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-12-06 22:58:31,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 49.7MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2041.52ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 51.3MB in the beginning and 47.0MB in the end (delta: 4.4MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 144.90ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 47.0MB in the beginning and 81.8MB in the end (delta: -34.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.32ms. Allocated memory is still 136.3MB. Free memory was 81.8MB in the beginning and 77.0MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1124.75ms. Allocated memory is still 136.3MB. Free memory was 77.0MB in the beginning and 65.6MB in the end (delta: 11.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30219.46ms. Allocated memory was 136.3MB in the beginning and 287.3MB in the end (delta: 151.0MB). Free memory was 64.5MB in the beginning and 69.6MB in the end (delta: -5.1MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. * Witness Printer took 744.38ms. Allocated memory is still 287.3MB. Free memory was 69.6MB in the beginning and 79.5MB in the end (delta: -10.0MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.2s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2198 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2051 mSDsluCounter, 13532 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1151 IncrementalHoareTripleChecker+Unchecked, 10748 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7394 IncrementalHoareTripleChecker+Invalid, 9225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 2784 mSDtfsCounter, 7394 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1992 GetRequests, 1658 SyntacticMatches, 30 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=13, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 175 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 440 PreInvPairs, 484 NumberOfFragments, 1554 HoareAnnotationTreeSize, 440 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 45 FomulaSimplificationsInter, 3189 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 2596 NumberOfCodeBlocks, 2596 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2983 ConstructedInterpolants, 101 QuantifiedInterpolants, 16017 SizeOfPredicates, 75 NumberOfNonLiveVariables, 23635 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 31 InterpolantComputations, 14 PerfectInterpolantSequences, 1856/2033 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6598]: Loop Invariant Derived loop invariant: ((str == 0 && str == 0) && !(buf == 0)) && buf == 0 - InvariantResult [Line: 9558]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9386]: Loop Invariant [2021-12-06 22:58:31,651 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-12-06 22:58:31,651 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR [2021-12-06 22:58:31,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-12-06 22:58:31,652 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR Derived loop invariant: ((((((((str == 0 && unknown-#memory_int-unknown[buf][16] <= 18446744073709551615 + 18446744073709551616 * ((unknown-#memory_int-unknown[buf][16] + unknown-#memory_int-unknown[buf][buf] / 18446744073709551616 * 18446744073709551616 + unknown-#memory_int-unknown[buf][buf] * -1) / 18446744073709551616)) && str == 0) && unknown-#memory_int-unknown[buf][16] <= 18446744073709551615 + 18446744073709551616 * ((-1 + unknown-#memory_int-unknown[buf][16]) / 18446744073709551616)) && !(buf == 0)) && !(#memory_$Pointer$[buf][~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR] == 0)) && buf == 0) && buf == buf) && buf == 0) || (((((str == 0 && 0 <= unknown-#memory_int-unknown[buf][buf] + 18446744073709551616 * (unknown-#memory_int-unknown[buf][buf] * -1 / 18446744073709551616)) && str == 0) && unknown-#memory_int-unknown[buf][16] <= 18446744073709551615 + 18446744073709551616 * ((-1 + unknown-#memory_int-unknown[buf][16]) / 18446744073709551616)) && !(buf == 0)) && buf == 0) - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: (((\old(max_size) == max_size || 16 == max_size) && !(str == 0)) && !(\result == 0)) && !(\old(max_size) == 16) RESULT: Ultimate proved your program to be correct! [2021-12-06 22:58:31,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7871b460-59c2-4299-8401-341168c45a03/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE