./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF --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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:55:36,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:55:36,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:55:36,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:55:36,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:55:36,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:55:36,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:55:36,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:55:36,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:55:36,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:55:36,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:55:36,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:55:36,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:55:36,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:55:36,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:55:36,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:55:36,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:55:36,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:55:36,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:55:36,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:55:36,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:55:36,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:55:36,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:55:36,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:55:36,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:55:36,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:55:36,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:55:36,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:55:36,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:55:36,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:55:36,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:55:36,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:55:36,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:55:36,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:55:36,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:55:36,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:55:36,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:55:36,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:55:36,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:55:36,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:55:36,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:55:36,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 05:55:36,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:55:36,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:55:36,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:55:36,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:55:36,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:55:36,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:55:36,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:55:36,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:55:36,619 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:55:36,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:55:36,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:55:36,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:55:36,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:55:36,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:55:36,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:55:36,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:55:36,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:55:36,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:55:36,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:55:36,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:55:36,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:55:36,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:55:36,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:55:36,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:55:36,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:55:36,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:55:36,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:55:36,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:55:36,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:55:36,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:55:36,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:55:36,629 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_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2021-11-20 05:55:36,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:55:36,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:55:36,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:55:36,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:55:36,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:55:36,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-20 05:55:37,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/data/ea92345a0/1186629397d545bdb5f69f3314eb9fa7/FLAGde863a7c1 [2021-11-20 05:55:38,007 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:55:38,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-20 05:55:38,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/data/ea92345a0/1186629397d545bdb5f69f3314eb9fa7/FLAGde863a7c1 [2021-11-20 05:55:38,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/data/ea92345a0/1186629397d545bdb5f69f3314eb9fa7 [2021-11-20 05:55:38,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:55:38,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:55:38,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:55:38,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:55:38,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:55:38,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:55:38" (1/1) ... [2021-11-20 05:55:38,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e6db39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:38, skipping insertion in model container [2021-11-20 05:55:38,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:55:38" (1/1) ... [2021-11-20 05:55:38,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:55:38,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:55:39,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2021-11-20 05:55:39,043 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_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2021-11-20 05:55:40,029 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 05:55:40,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,131 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:55:40,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:55:40,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:55:40,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:55:40,517 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:55:40,518 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:55:40,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:55:40,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:55:40,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:55:40,528 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:55:40,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:40,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:55:40,926 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:55:40,954 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_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2021-11-20 05:55:40,962 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_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2021-11-20 05:55:41,027 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 05:55:41,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:55:41,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:55:41,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:55:41,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:55:41,171 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:55:41,172 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:55:41,173 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:55:41,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:55:41,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:55:41,175 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:55:41,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:55:41,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:55:41,537 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:55:41,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41 WrapperNode [2021-11-20 05:55:41,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:55:41,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:55:41,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:55:41,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:55:41,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,761 INFO L137 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2021-11-20 05:55:41,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:55:41,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:55:41,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:55:41,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:55:41,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:55:41,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:55:41,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:55:41,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:55:41,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (1/1) ... [2021-11-20 05:55:41,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:55:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:41,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:55:42,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:55:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:55:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 05:55:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 05:55:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 05:55:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 05:55:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 05:55:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 05:55:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:55:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 05:55:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 05:55:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:55:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:55:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:55:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:55:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:55:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:55:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:55:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 05:55:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 05:55:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 05:55:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 05:55:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 05:55:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 05:55:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 05:55:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 05:55:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 05:55:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 05:55:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:55:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:55:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:55:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 05:55:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 05:55:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 05:55:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 05:55:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:55:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 05:55:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 05:55:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:55:42,383 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:55:42,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:55:43,724 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:55:43,735 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:55:43,735 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:55:43,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:55:43 BoogieIcfgContainer [2021-11-20 05:55:43,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:55:43,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:55:43,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:55:43,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:55:43,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:55:38" (1/3) ... [2021-11-20 05:55:43,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df7940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:55:43, skipping insertion in model container [2021-11-20 05:55:43,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:55:41" (2/3) ... [2021-11-20 05:55:43,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df7940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:55:43, skipping insertion in model container [2021-11-20 05:55:43,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:55:43" (3/3) ... [2021-11-20 05:55:43,749 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2021-11-20 05:55:43,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:55:43,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:55:43,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:55:43,850 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 [2021-11-20 05:55:43,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:55:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-20 05:55:43,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 05:55:43,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:43,903 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2021-11-20 05:55:43,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2021-11-20 05:55:43,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749560902] [2021-11-20 05:55:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:43,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:55:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:55:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:55:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:55:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:55:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:55:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:55:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:55:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 05:55:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 05:55:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:55:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-20 05:55:44,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:44,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749560902] [2021-11-20 05:55:44,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749560902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:44,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:44,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:55:44,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463391647] [2021-11-20 05:55:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:44,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:55:44,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:55:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:55:44,789 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 05:55:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:45,370 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2021-11-20 05:55:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:55:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2021-11-20 05:55:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:45,388 INFO L225 Difference]: With dead ends: 248 [2021-11-20 05:55:45,389 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 05:55:45,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:55:45,406 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:45,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:55:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 05:55:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2021-11-20 05:55:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:55:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2021-11-20 05:55:45,499 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2021-11-20 05:55:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:45,499 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2021-11-20 05:55:45,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 05:55:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2021-11-20 05:55:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 05:55:45,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:45,506 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2021-11-20 05:55:45,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:55:45,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2021-11-20 05:55:45,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:45,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892537895] [2021-11-20 05:55:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:45,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:55:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:55:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:55:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:55:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:55:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:55:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:55:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 05:55:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 05:55:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 05:55:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:55:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-20 05:55:45,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892537895] [2021-11-20 05:55:45,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892537895] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:55:45,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879910483] [2021-11-20 05:55:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:45,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:45,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:45,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:55:45,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:55:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:46,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:55:46,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-20 05:55:46,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:55:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879910483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:46,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:55:46,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-20 05:55:46,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607635224] [2021-11-20 05:55:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:46,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:55:46,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:55:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:55:46,855 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:55:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:47,135 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2021-11-20 05:55:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:55:47,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2021-11-20 05:55:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:47,142 INFO L225 Difference]: With dead ends: 193 [2021-11-20 05:55:47,142 INFO L226 Difference]: Without dead ends: 116 [2021-11-20 05:55:47,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:55:47,153 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:47,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 414 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:55:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-20 05:55:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-20 05:55:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2021-11-20 05:55:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2021-11-20 05:55:47,192 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2021-11-20 05:55:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2021-11-20 05:55:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-20 05:55:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2021-11-20 05:55:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 05:55:47,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:47,216 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2021-11-20 05:55:47,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:55:47,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 05:55:47,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2021-11-20 05:55:47,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728684713] [2021-11-20 05:55:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:47,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:47,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:55:47,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250181759] [2021-11-20 05:55:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:47,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:47,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:55:47,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:55:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:48,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:55:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 05:55:48,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:55:48,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:55:48,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728684713] [2021-11-20 05:55:48,406 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:55:48,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250181759] [2021-11-20 05:55:48,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250181759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:55:48,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:55:48,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:55:48,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823789943] [2021-11-20 05:55:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:55:48,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:55:48,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:55:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:55:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:55:48,414 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:55:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:48,702 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2021-11-20 05:55:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:55:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2021-11-20 05:55:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:48,710 INFO L225 Difference]: With dead ends: 182 [2021-11-20 05:55:48,710 INFO L226 Difference]: Without dead ends: 114 [2021-11-20 05:55:48,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:55:48,714 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:48,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 591 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:55:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-20 05:55:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-11-20 05:55:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:55:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2021-11-20 05:55:48,748 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2021-11-20 05:55:48,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:48,748 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2021-11-20 05:55:48,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-20 05:55:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2021-11-20 05:55:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 05:55:48,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:48,754 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:55:48,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:55:48,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:48,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:48,982 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2021-11-20 05:55:48,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:55:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224553085] [2021-11-20 05:55:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:48,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:55:49,053 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:55:49,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388040077] [2021-11-20 05:55:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:49,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:55:49,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:55:49,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:55:49,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:55:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:49,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 230 conjunts are in the unsatisfiable core [2021-11-20 05:55:49,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:49,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:55:54,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:55:56,324 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-20 05:55:56,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 29 [2021-11-20 05:55:57,089 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-20 05:55:57,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 43 treesize of output 71 [2021-11-20 05:56:06,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:56:06,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:06,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 91 [2021-11-20 05:56:06,771 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-20 05:56:06,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 91 treesize of output 95 [2021-11-20 05:56:41,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:56:41,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 72 [2021-11-20 05:56:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 05:56:42,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:50,255 WARN L227 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 05:57:05,370 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse1 (+ 16 c_aws_array_list_length_~list.offset)) (select .cse1 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse0)) c_aws_array_list_length_~list.base) (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616)))) (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse4 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse3 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ 16 c_aws_array_list_length_~list.offset)) (select .cse5 .cse4))))) (let ((.cse2 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse3)) c_aws_array_list_length_~list.base))) (or (< (mod (select .cse2 (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616) (mod .cse3 18446744073709551616)) (not (= (mod (select .cse2 .cse4) 18446744073709551616) 0)))))))) is different from false [2021-11-20 05:57:05,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224553085] [2021-11-20 05:57:05,377 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:57:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388040077] [2021-11-20 05:57:05,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388040077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:57:05,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:57:05,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-11-20 05:57:05,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352621406] [2021-11-20 05:57:05,378 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:05,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-20 05:57:05,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:05,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-20 05:57:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2672, Unknown=19, NotChecked=104, Total=2970 [2021-11-20 05:57:05,383 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 51 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 37 states have internal predecessors, (77), 14 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2021-11-20 05:57:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:37,564 INFO L93 Difference]: Finished difference Result 179 states and 223 transitions. [2021-11-20 05:57:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 05:57:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 37 states have internal predecessors, (77), 14 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) Word has length 116 [2021-11-20 05:57:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:37,569 INFO L225 Difference]: With dead ends: 179 [2021-11-20 05:57:37,570 INFO L226 Difference]: Without dead ends: 177 [2021-11-20 05:57:37,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=322, Invalid=4908, Unknown=30, NotChecked=142, Total=5402 [2021-11-20 05:57:37,574 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 108 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2088 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:37,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1855 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1001 Invalid, 0 Unknown, 2088 Unchecked, 1.4s Time] [2021-11-20 05:57:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-20 05:57:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2021-11-20 05:57:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 113 states have internal predecessors, (126), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (47), 37 states have call predecessors, (47), 37 states have call successors, (47) [2021-11-20 05:57:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 212 transitions. [2021-11-20 05:57:37,604 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 212 transitions. Word has length 116 [2021-11-20 05:57:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:37,605 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 212 transitions. [2021-11-20 05:57:37,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 37 states have internal predecessors, (77), 14 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2021-11-20 05:57:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 212 transitions. [2021-11-20 05:57:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 05:57:37,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:37,608 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:37,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:37,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:37,822 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash -540933358, now seen corresponding path program 1 times [2021-11-20 05:57:37,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501600388] [2021-11-20 05:57:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:37,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:37,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:57:37,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507530581] [2021-11-20 05:57:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:37,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:37,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:37,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:57:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:38,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:57:38,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-20 05:57:38,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:57:38,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:38,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501600388] [2021-11-20 05:57:38,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:57:38,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507530581] [2021-11-20 05:57:38,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507530581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:38,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:38,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:38,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495769152] [2021-11-20 05:57:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:38,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:38,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:38,699 INFO L87 Difference]: Start difference. First operand 171 states and 212 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 05:57:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:38,748 INFO L93 Difference]: Finished difference Result 263 states and 336 transitions. [2021-11-20 05:57:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2021-11-20 05:57:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:38,753 INFO L225 Difference]: With dead ends: 263 [2021-11-20 05:57:38,753 INFO L226 Difference]: Without dead ends: 176 [2021-11-20 05:57:38,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:57:38,755 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 7 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 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 [2021-11-20 05:57:38,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:57:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-20 05:57:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2021-11-20 05:57:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 115 states have internal predecessors, (128), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (47), 37 states have call predecessors, (47), 37 states have call successors, (47) [2021-11-20 05:57:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 214 transitions. [2021-11-20 05:57:38,778 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 214 transitions. Word has length 116 [2021-11-20 05:57:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:38,779 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 214 transitions. [2021-11-20 05:57:38,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-20 05:57:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 214 transitions. [2021-11-20 05:57:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 05:57:38,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:38,783 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:38,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:38,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:38,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1375882568, now seen corresponding path program 1 times [2021-11-20 05:57:38,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635723125] [2021-11-20 05:57:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:38,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:39,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:57:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128286734] [2021-11-20 05:57:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:39,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:39,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:57:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:39,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 05:57:39,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:40,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:57:40,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:40,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635723125] [2021-11-20 05:57:40,101 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:57:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128286734] [2021-11-20 05:57:40,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128286734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:40,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:40,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 05:57:40,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320144822] [2021-11-20 05:57:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:40,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:57:40,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:40,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:57:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:57:40,103 INFO L87 Difference]: Start difference. First operand 173 states and 214 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 05:57:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:40,327 INFO L93 Difference]: Finished difference Result 255 states and 320 transitions. [2021-11-20 05:57:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:57:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 128 [2021-11-20 05:57:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:40,330 INFO L225 Difference]: With dead ends: 255 [2021-11-20 05:57:40,330 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 05:57:40,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:57:40,332 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 12 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:40,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1668 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:57:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 05:57:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-11-20 05:57:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 122 states have internal predecessors, (135), 39 states have call successors, (39), 20 states have call predecessors, (39), 22 states have return successors, (52), 37 states have call predecessors, (52), 37 states have call successors, (52) [2021-11-20 05:57:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 226 transitions. [2021-11-20 05:57:40,351 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 226 transitions. Word has length 128 [2021-11-20 05:57:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:40,352 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 226 transitions. [2021-11-20 05:57:40,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 05:57:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 226 transitions. [2021-11-20 05:57:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 05:57:40,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:40,354 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:40,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 05:57:40,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 05:57:40,582 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1956848216, now seen corresponding path program 1 times [2021-11-20 05:57:40,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972536752] [2021-11-20 05:57:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:40,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:40,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:57:40,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505775201] [2021-11-20 05:57:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:40,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:40,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:40,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:57:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:41,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-20 05:57:41,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:41,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:41,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:57:41,915 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 60 treesize of output 47 [2021-11-20 05:57:41,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:57:41,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:57:41,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-20 05:57:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 05:57:42,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:43,518 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 05:57:43,519 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 40 treesize of output 35 [2021-11-20 05:57:43,527 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-20 05:57:43,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-20 05:57:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-20 05:57:43,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:43,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972536752] [2021-11-20 05:57:43,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:57:43,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505775201] [2021-11-20 05:57:43,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505775201] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:43,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:43,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2021-11-20 05:57:43,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980078357] [2021-11-20 05:57:43,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:43,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 05:57:43,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 05:57:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-11-20 05:57:43,677 INFO L87 Difference]: Start difference. First operand 180 states and 226 transitions. Second operand has 26 states, 23 states have (on average 4.217391304347826) internal successors, (97), 22 states have internal predecessors, (97), 9 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 8 states have call successors, (27) [2021-11-20 05:57:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:45,421 INFO L93 Difference]: Finished difference Result 315 states and 409 transitions. [2021-11-20 05:57:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 05:57:45,422 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 4.217391304347826) internal successors, (97), 22 states have internal predecessors, (97), 9 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 8 states have call successors, (27) Word has length 122 [2021-11-20 05:57:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:45,425 INFO L225 Difference]: With dead ends: 315 [2021-11-20 05:57:45,425 INFO L226 Difference]: Without dead ends: 229 [2021-11-20 05:57:45,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 05:57:45,427 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 104 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:45,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1972 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 956 Invalid, 0 Unknown, 65 Unchecked, 1.3s Time] [2021-11-20 05:57:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-20 05:57:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2021-11-20 05:57:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 128 states have (on average 1.1328125) internal successors, (145), 132 states have internal predecessors, (145), 41 states have call successors, (41), 22 states have call predecessors, (41), 24 states have return successors, (59), 39 states have call predecessors, (59), 39 states have call successors, (59) [2021-11-20 05:57:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 245 transitions. [2021-11-20 05:57:45,454 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 245 transitions. Word has length 122 [2021-11-20 05:57:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:45,455 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 245 transitions. [2021-11-20 05:57:45,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 4.217391304347826) internal successors, (97), 22 states have internal predecessors, (97), 9 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (27), 7 states have call predecessors, (27), 8 states have call successors, (27) [2021-11-20 05:57:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 245 transitions. [2021-11-20 05:57:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 05:57:45,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:45,459 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:45,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:45,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:45,677 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash -329052073, now seen corresponding path program 1 times [2021-11-20 05:57:45,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:45,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559349088] [2021-11-20 05:57:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:45,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:45,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:57:45,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548353702] [2021-11-20 05:57:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:45,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:45,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:45,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:57:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:46,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-20 05:57:46,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:46,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:57:46,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 05:57:46,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-20 05:57:46,839 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 05:57:46,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-11-20 05:57:46,910 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-11-20 05:57:46,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-20 05:57:49,088 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 05:57:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:49,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:50,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559349088] [2021-11-20 05:57:50,247 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:57:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548353702] [2021-11-20 05:57:50,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548353702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:57:50,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:57:50,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-20 05:57:50,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266780608] [2021-11-20 05:57:50,248 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:50,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:57:50,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:57:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=398, Unknown=1, NotChecked=40, Total=506 [2021-11-20 05:57:50,249 INFO L87 Difference]: Start difference. First operand 194 states and 245 transitions. Second operand has 22 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 05:57:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:57,067 INFO L93 Difference]: Finished difference Result 305 states and 384 transitions. [2021-11-20 05:57:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:57:57,068 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 128 [2021-11-20 05:57:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:57,070 INFO L225 Difference]: With dead ends: 305 [2021-11-20 05:57:57,070 INFO L226 Difference]: Without dead ends: 198 [2021-11-20 05:57:57,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 179 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=112, Invalid=701, Unknown=3, NotChecked=54, Total=870 [2021-11-20 05:57:57,072 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 68 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 572 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:57,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 513 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 411 Invalid, 0 Unknown, 572 Unchecked, 0.6s Time] [2021-11-20 05:57:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-20 05:57:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-20 05:57:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 135 states have internal predecessors, (147), 42 states have call successors, (42), 22 states have call predecessors, (42), 25 states have return successors, (63), 40 states have call predecessors, (63), 40 states have call successors, (63) [2021-11-20 05:57:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 252 transitions. [2021-11-20 05:57:57,098 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 252 transitions. Word has length 128 [2021-11-20 05:57:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:57,098 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 252 transitions. [2021-11-20 05:57:57,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 05:57:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 252 transitions. [2021-11-20 05:57:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 05:57:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:57,102 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-11-20 05:57:57,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:57,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:57,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1322343694, now seen corresponding path program 1 times [2021-11-20 05:57:57,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:57,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139511730] [2021-11-20 05:57:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:57,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:57,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:57:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144230796] [2021-11-20 05:57:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:57,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:57:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:57:57,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:57:57,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:57:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:57,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-20 05:57:57,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:57,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:57:58,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 05:57:58,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-20 05:57:58,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-20 05:57:58,404 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 05:57:58,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-11-20 05:57:58,461 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-11-20 05:57:58,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-20 05:58:00,692 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 05:58:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:58:01,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:58:01,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:01,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139511730] [2021-11-20 05:58:01,943 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:58:01,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144230796] [2021-11-20 05:58:01,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144230796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:58:01,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:58:01,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-11-20 05:58:01,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277217147] [2021-11-20 05:58:01,944 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 05:58:01,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:58:01,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:58:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=398, Unknown=1, NotChecked=40, Total=506 [2021-11-20 05:58:01,946 INFO L87 Difference]: Start difference. First operand 198 states and 252 transitions. Second operand has 22 states, 20 states have (on average 3.35) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 05:58:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:08,590 INFO L93 Difference]: Finished difference Result 308 states and 385 transitions. [2021-11-20 05:58:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:58:08,591 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.35) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 127 [2021-11-20 05:58:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:08,593 INFO L225 Difference]: With dead ends: 308 [2021-11-20 05:58:08,593 INFO L226 Difference]: Without dead ends: 201 [2021-11-20 05:58:08,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=112, Invalid=701, Unknown=3, NotChecked=54, Total=870 [2021-11-20 05:58:08,595 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 108 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 695 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:08,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 585 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 478 Invalid, 0 Unknown, 695 Unchecked, 0.5s Time] [2021-11-20 05:58:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-20 05:58:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2021-11-20 05:58:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 134 states have internal predecessors, (147), 41 states have call successors, (41), 23 states have call predecessors, (41), 25 states have return successors, (58), 39 states have call predecessors, (58), 39 states have call successors, (58) [2021-11-20 05:58:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2021-11-20 05:58:08,613 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 127 [2021-11-20 05:58:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:08,614 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2021-11-20 05:58:08,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.35) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 05:58:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2021-11-20 05:58:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 05:58:08,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:08,617 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:58:08,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:08,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-20 05:58:08,841 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -951625723, now seen corresponding path program 2 times [2021-11-20 05:58:08,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125011773] [2021-11-20 05:58:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:08,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:08,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:58:08,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132441761] [2021-11-20 05:58:08,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:58:08,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:08,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:58:08,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 05:58:09,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:58:09,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:58:09,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 05:58:09,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:09,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 05:58:10,130 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 05:58:10,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 05:58:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-20 05:58:10,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:58:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125011773] [2021-11-20 05:58:10,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:58:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132441761] [2021-11-20 05:58:10,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132441761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:10,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:10,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 05:58:10,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591463735] [2021-11-20 05:58:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:10,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:58:10,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:58:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:58:10,644 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-20 05:58:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:11,585 INFO L93 Difference]: Finished difference Result 310 states and 386 transitions. [2021-11-20 05:58:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:58:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 134 [2021-11-20 05:58:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:11,588 INFO L225 Difference]: With dead ends: 310 [2021-11-20 05:58:11,588 INFO L226 Difference]: Without dead ends: 203 [2021-11-20 05:58:11,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:58:11,591 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 99 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:11,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 697 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 643 Invalid, 0 Unknown, 107 Unchecked, 0.7s Time] [2021-11-20 05:58:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-20 05:58:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2021-11-20 05:58:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 134 states have internal predecessors, (147), 41 states have call successors, (41), 23 states have call predecessors, (41), 25 states have return successors, (57), 39 states have call predecessors, (57), 39 states have call successors, (57) [2021-11-20 05:58:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 245 transitions. [2021-11-20 05:58:11,614 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 245 transitions. Word has length 134 [2021-11-20 05:58:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:11,614 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 245 transitions. [2021-11-20 05:58:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-20 05:58:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 245 transitions. [2021-11-20 05:58:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 05:58:11,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:11,618 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:58:11,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:11,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:11,834 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1087830636, now seen corresponding path program 2 times [2021-11-20 05:58:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:11,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329854446] [2021-11-20 05:58:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:11,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:11,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:58:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209439593] [2021-11-20 05:58:11,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:58:11,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:11,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:58:11,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 05:58:13,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:58:13,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:58:13,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-20 05:58:13,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-20 05:58:13,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:58:13,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:58:13,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329854446] [2021-11-20 05:58:13,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:58:13,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209439593] [2021-11-20 05:58:13,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209439593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:58:13,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:13,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:58:13,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280595242] [2021-11-20 05:58:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:13,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:58:13,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:58:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:58:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:58:13,423 INFO L87 Difference]: Start difference. First operand 197 states and 245 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:58:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:13,724 INFO L93 Difference]: Finished difference Result 296 states and 368 transitions. [2021-11-20 05:58:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:58:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2021-11-20 05:58:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:13,727 INFO L225 Difference]: With dead ends: 296 [2021-11-20 05:58:13,728 INFO L226 Difference]: Without dead ends: 186 [2021-11-20 05:58:13,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:58:13,730 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 11 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:13,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1547 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:58:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-20 05:58:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2021-11-20 05:58:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.1333333333333333) internal successors, (136), 124 states have internal predecessors, (136), 39 states have call successors, (39), 21 states have call predecessors, (39), 23 states have return successors, (49), 37 states have call predecessors, (49), 37 states have call successors, (49) [2021-11-20 05:58:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2021-11-20 05:58:13,750 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 128 [2021-11-20 05:58:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:13,750 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2021-11-20 05:58:13,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:58:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2021-11-20 05:58:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-20 05:58:13,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:13,754 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:58:13,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:13,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 05:58:13,969 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:13,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 927216381, now seen corresponding path program 1 times [2021-11-20 05:58:13,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:13,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949542747] [2021-11-20 05:58:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:13,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:58:14,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:58:14,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861384260] [2021-11-20 05:58:14,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:14,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:14,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:58:14,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 05:58:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:14,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-20 05:58:14,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:17,545 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 05:59:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:14,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:59:14,349 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-20 05:59:14,350 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 51 treesize of output 1 [2021-11-20 05:59:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 83 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 05:59:14,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:17,260 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73|) 0 v_DerPreprocessor_5)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73|) 0 v_DerPreprocessor_4)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2021-11-20 05:59:17,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949542747] [2021-11-20 05:59:17,263 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:59:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861384260] [2021-11-20 05:59:17,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861384260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:59:17,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:59:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-20 05:59:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234000315] [2021-11-20 05:59:17,264 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:59:17,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:59:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=274, Unknown=22, NotChecked=70, Total=420 [2021-11-20 05:59:17,266 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2021-11-20 05:59:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:20,778 INFO L93 Difference]: Finished difference Result 327 states and 427 transitions. [2021-11-20 05:59:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:59:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 130 [2021-11-20 05:59:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:20,782 INFO L225 Difference]: With dead ends: 327 [2021-11-20 05:59:20,782 INFO L226 Difference]: Without dead ends: 244 [2021-11-20 05:59:20,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 61.4s TimeCoverageRelationStatistics Valid=94, Invalid=492, Unknown=22, NotChecked=94, Total=702 [2021-11-20 05:59:20,785 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 81 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 831 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:20,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1178 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1009 Invalid, 0 Unknown, 831 Unchecked, 3.0s Time] [2021-11-20 05:59:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-20 05:59:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 214. [2021-11-20 05:59:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 146 states have internal predecessors, (160), 46 states have call successors, (46), 23 states have call predecessors, (46), 27 states have return successors, (72), 44 states have call predecessors, (72), 44 states have call successors, (72) [2021-11-20 05:59:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2021-11-20 05:59:20,834 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 130 [2021-11-20 05:59:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:20,835 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2021-11-20 05:59:20,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2021-11-20 05:59:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2021-11-20 05:59:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 05:59:20,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:20,839 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:59:20,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-20 05:59:21,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 05:59:21,074 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 637748227, now seen corresponding path program 1 times [2021-11-20 05:59:21,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:21,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026784245] [2021-11-20 05:59:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:21,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:21,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:59:21,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102930292] [2021-11-20 05:59:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:21,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:21,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:21,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 05:59:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:21,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:59:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-20 05:59:21,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:59:21,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:59:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026784245] [2021-11-20 05:59:21,991 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:59:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102930292] [2021-11-20 05:59:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102930292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:59:21,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:59:21,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:59:21,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64531558] [2021-11-20 05:59:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:59:21,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:59:21,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:59:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:59:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:59:21,993 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 05:59:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:22,427 INFO L93 Difference]: Finished difference Result 323 states and 434 transitions. [2021-11-20 05:59:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:59:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2021-11-20 05:59:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:22,432 INFO L225 Difference]: With dead ends: 323 [2021-11-20 05:59:22,432 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 05:59:22,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:59:22,434 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 7 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:22,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 504 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:59:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 05:59:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2021-11-20 05:59:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 140 states have (on average 1.1285714285714286) internal successors, (158), 146 states have internal predecessors, (158), 46 states have call successors, (46), 23 states have call predecessors, (46), 27 states have return successors, (72), 44 states have call predecessors, (72), 44 states have call successors, (72) [2021-11-20 05:59:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 276 transitions. [2021-11-20 05:59:22,454 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 276 transitions. Word has length 126 [2021-11-20 05:59:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:22,455 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 276 transitions. [2021-11-20 05:59:22,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 05:59:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 276 transitions. [2021-11-20 05:59:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 05:59:22,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:22,458 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:59:22,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:22,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:22,677 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:59:22,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1868050624, now seen corresponding path program 1 times [2021-11-20 05:59:22,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:59:22,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208197382] [2021-11-20 05:59:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:22,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:59:22,782 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:59:22,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899745088] [2021-11-20 05:59:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:22,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:59:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:59:22,784 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:59:22,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 05:59:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:23,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-20 05:59:23,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:26,752 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))))) is different from true [2021-11-20 06:00:27,908 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-20 06:00:27,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-11-20 06:00:27,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2021-11-20 06:00:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 3 not checked. [2021-11-20 06:00:42,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:59,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:00:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208197382] [2021-11-20 06:00:59,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:00:59,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899745088] [2021-11-20 06:00:59,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899745088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:00:59,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:00:59,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-20 06:00:59,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929197134] [2021-11-20 06:00:59,178 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:00:59,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:00:59,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:00:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:00:59,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=638, Unknown=32, NotChecked=52, Total=812 [2021-11-20 06:00:59,180 INFO L87 Difference]: Start difference. First operand 214 states and 276 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 06:01:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:01:04,076 INFO L93 Difference]: Finished difference Result 348 states and 464 transitions. [2021-11-20 06:01:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:01:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 124 [2021-11-20 06:01:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:01:04,080 INFO L225 Difference]: With dead ends: 348 [2021-11-20 06:01:04,081 INFO L226 Difference]: Without dead ends: 262 [2021-11-20 06:01:04,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 92.9s TimeCoverageRelationStatistics Valid=129, Invalid=899, Unknown=32, NotChecked=62, Total=1122 [2021-11-20 06:01:04,083 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 86 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 694 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:01:04,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 793 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1011 Invalid, 0 Unknown, 694 Unchecked, 4.2s Time] [2021-11-20 06:01:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-20 06:01:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 235. [2021-11-20 06:01:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 153 states have (on average 1.1176470588235294) internal successors, (171), 161 states have internal predecessors, (171), 50 states have call successors, (50), 25 states have call predecessors, (50), 31 states have return successors, (95), 48 states have call predecessors, (95), 48 states have call successors, (95) [2021-11-20 06:01:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2021-11-20 06:01:04,113 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 124 [2021-11-20 06:01:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:01:04,114 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2021-11-20 06:01:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-20 06:01:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2021-11-20 06:01:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 06:01:04,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:01:04,118 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:01:04,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:01:04,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:01:04,346 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:01:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:01:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1517329579, now seen corresponding path program 1 times [2021-11-20 06:01:04,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:01:04,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323306263] [2021-11-20 06:01:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:01:04,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:01:04,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:01:04,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107914969] [2021-11-20 06:01:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:01:04,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:01:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:01:04,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:01:04,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 06:01:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:01:04,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-20 06:01:04,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:01:05,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 06:01:05,845 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 06:01:05,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 06:01:06,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-20 06:01:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:01:49,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-11-20 06:02:00,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-20 06:02:00,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-11-20 06:02:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 06:02:01,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:02:01,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:01,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323306263] [2021-11-20 06:02:01,076 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:02:01,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107914969] [2021-11-20 06:02:01,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107914969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:01,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:01,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-20 06:02:01,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532981788] [2021-11-20 06:02:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:01,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 06:02:01,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 06:02:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=361, Unknown=20, NotChecked=0, Total=462 [2021-11-20 06:02:01,078 INFO L87 Difference]: Start difference. First operand 235 states and 316 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2021-11-20 06:02:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:11,986 INFO L93 Difference]: Finished difference Result 371 states and 494 transitions. [2021-11-20 06:02:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 06:02:11,987 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 124 [2021-11-20 06:02:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:11,991 INFO L225 Difference]: With dead ends: 371 [2021-11-20 06:02:11,991 INFO L226 Difference]: Without dead ends: 264 [2021-11-20 06:02:11,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 60.9s TimeCoverageRelationStatistics Valid=130, Invalid=659, Unknown=23, NotChecked=0, Total=812 [2021-11-20 06:02:11,994 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 153 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 765 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:11,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 649 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 987 Invalid, 0 Unknown, 765 Unchecked, 3.8s Time] [2021-11-20 06:02:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-20 06:02:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 242. [2021-11-20 06:02:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 165 states have internal predecessors, (176), 51 states have call successors, (51), 26 states have call predecessors, (51), 32 states have return successors, (96), 50 states have call predecessors, (96), 49 states have call successors, (96) [2021-11-20 06:02:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 323 transitions. [2021-11-20 06:02:12,025 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 323 transitions. Word has length 124 [2021-11-20 06:02:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 323 transitions. [2021-11-20 06:02:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 9 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2021-11-20 06:02:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 323 transitions. [2021-11-20 06:02:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 06:02:12,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:12,030 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:02:12,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:12,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:12,258 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash -506957804, now seen corresponding path program 1 times [2021-11-20 06:02:12,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:12,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715417299] [2021-11-20 06:02:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:12,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:12,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:02:12,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110033753] [2021-11-20 06:02:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:12,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:12,342 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:12,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 06:02:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:12,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-20 06:02:12,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:12,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:02:22,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:22,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:02:22,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:22,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:02:26,887 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 06:02:28,794 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-11-20 06:02:28,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 1 [2021-11-20 06:02:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 06:02:29,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:30,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:30,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715417299] [2021-11-20 06:02:30,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:02:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110033753] [2021-11-20 06:02:30,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110033753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:30,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:30,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-20 06:02:30,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208978116] [2021-11-20 06:02:30,853 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:30,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:02:30,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:02:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=4, NotChecked=28, Total=272 [2021-11-20 06:02:30,856 INFO L87 Difference]: Start difference. First operand 242 states and 323 transitions. Second operand has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-20 06:02:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:36,868 INFO L93 Difference]: Finished difference Result 377 states and 505 transitions. [2021-11-20 06:02:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:02:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 120 [2021-11-20 06:02:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:36,872 INFO L225 Difference]: With dead ends: 377 [2021-11-20 06:02:36,873 INFO L226 Difference]: Without dead ends: 246 [2021-11-20 06:02:36,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=51, Invalid=253, Unknown=6, NotChecked=32, Total=342 [2021-11-20 06:02:36,875 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 82 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 797 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:36,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 609 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 378 Invalid, 0 Unknown, 797 Unchecked, 1.8s Time] [2021-11-20 06:02:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-20 06:02:36,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2021-11-20 06:02:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1139240506329113) internal successors, (176), 165 states have internal predecessors, (176), 51 states have call successors, (51), 26 states have call predecessors, (51), 32 states have return successors, (95), 50 states have call predecessors, (95), 49 states have call successors, (95) [2021-11-20 06:02:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 322 transitions. [2021-11-20 06:02:36,903 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 322 transitions. Word has length 120 [2021-11-20 06:02:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:36,904 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 322 transitions. [2021-11-20 06:02:36,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-20 06:02:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 322 transitions. [2021-11-20 06:02:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 06:02:36,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:36,907 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:02:36,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:37,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 06:02:37,121 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash -212590342, now seen corresponding path program 1 times [2021-11-20 06:02:37,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939095950] [2021-11-20 06:02:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:02:37,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183921907] [2021-11-20 06:02:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:37,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:37,169 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:37,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 06:02:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:37,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-20 06:02:37,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-11-20 06:02:40,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-20 06:02:40,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-20 06:02:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 06:02:41,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:02:41,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:41,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939095950] [2021-11-20 06:02:41,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:02:41,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183921907] [2021-11-20 06:02:41,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183921907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:41,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:41,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:02:41,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8454061] [2021-11-20 06:02:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:41,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:02:41,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:02:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:02:41,178 INFO L87 Difference]: Start difference. First operand 242 states and 322 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-20 06:02:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:46,955 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-11-20 06:02:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:02:46,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 118 [2021-11-20 06:02:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:46,959 INFO L225 Difference]: With dead ends: 375 [2021-11-20 06:02:46,959 INFO L226 Difference]: Without dead ends: 268 [2021-11-20 06:02:46,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-11-20 06:02:46,962 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 117 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:46,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 812 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1082 Invalid, 0 Unknown, 268 Unchecked, 4.1s Time] [2021-11-20 06:02:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-20 06:02:46,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 239. [2021-11-20 06:02:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 156 states have (on average 1.108974358974359) internal successors, (173), 164 states have internal predecessors, (173), 50 states have call successors, (50), 26 states have call predecessors, (50), 32 states have return successors, (94), 48 states have call predecessors, (94), 48 states have call successors, (94) [2021-11-20 06:02:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 317 transitions. [2021-11-20 06:02:46,990 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 317 transitions. Word has length 118 [2021-11-20 06:02:46,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:46,991 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 317 transitions. [2021-11-20 06:02:46,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-20 06:02:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 317 transitions. [2021-11-20 06:02:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 06:02:46,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:46,994 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:02:47,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-20 06:02:47,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 06:02:47,210 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash 644023780, now seen corresponding path program 1 times [2021-11-20 06:02:47,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:47,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046023410] [2021-11-20 06:02:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:47,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:47,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:02:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548029188] [2021-11-20 06:02:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:47,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:47,286 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:47,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 06:02:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:47,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:02:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-20 06:02:48,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:02:48,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:02:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046023410] [2021-11-20 06:02:48,354 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:02:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548029188] [2021-11-20 06:02:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548029188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:48,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:48,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:02:48,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996717899] [2021-11-20 06:02:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:48,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:48,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:02:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:48,356 INFO L87 Difference]: Start difference. First operand 239 states and 317 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:02:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:48,888 INFO L93 Difference]: Finished difference Result 366 states and 497 transitions. [2021-11-20 06:02:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 126 [2021-11-20 06:02:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:48,895 INFO L225 Difference]: With dead ends: 366 [2021-11-20 06:02:48,895 INFO L226 Difference]: Without dead ends: 235 [2021-11-20 06:02:48,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:02:48,898 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 13 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:48,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 475 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:02:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-20 06:02:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-11-20 06:02:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 153 states have (on average 1.0980392156862746) internal successors, (168), 160 states have internal predecessors, (168), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (84), 48 states have call predecessors, (84), 48 states have call successors, (84) [2021-11-20 06:02:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 302 transitions. [2021-11-20 06:02:48,925 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 302 transitions. Word has length 126 [2021-11-20 06:02:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:48,926 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 302 transitions. [2021-11-20 06:02:48,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 06:02:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 302 transitions. [2021-11-20 06:02:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 06:02:48,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:48,929 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:02:48,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:49,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:02:49,154 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:02:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1667107525, now seen corresponding path program 1 times [2021-11-20 06:02:49,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629075369] [2021-11-20 06:02:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:49,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:49,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:02:49,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099948280] [2021-11-20 06:02:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:49,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:49,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:49,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:49,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 06:02:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-20 06:02:49,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:49,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:02:50,368 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-20 06:02:50,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:02:52,955 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))))) is different from true [2021-11-20 06:03:50,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:03:50,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-20 06:05:07,139 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 06:05:09,200 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-20 06:05:09,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 06:07:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 15 refuted. 4 times theorem prover too weak. 32 trivial. 22 not checked. [2021-11-20 06:07:54,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:07:56,910 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_101| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_101| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_101|) 0 v_DerPreprocessor_9)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2021-11-20 06:07:56,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629075369] [2021-11-20 06:07:56,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:07:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099948280] [2021-11-20 06:07:56,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099948280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:07:56,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:07:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-11-20 06:07:56,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758168012] [2021-11-20 06:07:56,919 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:07:56,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 06:07:56,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 06:07:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=733, Unknown=119, NotChecked=244, Total=1190 [2021-11-20 06:07:56,923 INFO L87 Difference]: Start difference. First operand 235 states and 302 transitions. Second operand has 34 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 13 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-20 06:08:00,587 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))))) is different from true [2021-11-20 06:08:31,622 WARN L227 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:08:48,191 WARN L227 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 40 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:08:50,225 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|)) (let ((.cse0 (+ 32 |c_aws_array_list_is_valid_#in~list.offset|))) (or (not (= (select (select |c_#memory_$Pointer$.offset| |c_aws_array_list_is_valid_#in~list.base|) .cse0) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_array_list_is_valid_#in~list.base|) .cse0) 0))))) is different from true [2021-11-20 06:08:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:59,111 INFO L93 Difference]: Finished difference Result 357 states and 459 transitions. [2021-11-20 06:08:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 06:08:59,112 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 13 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) Word has length 126 [2021-11-20 06:08:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:59,116 INFO L225 Difference]: With dead ends: 357 [2021-11-20 06:08:59,116 INFO L226 Difference]: Without dead ends: 268 [2021-11-20 06:08:59,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 363.7s TimeCoverageRelationStatistics Valid=209, Invalid=1840, Unknown=137, NotChecked=570, Total=2756 [2021-11-20 06:08:59,119 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 122 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1628 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:59,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 1239 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 879 Invalid, 0 Unknown, 1628 Unchecked, 3.0s Time] [2021-11-20 06:08:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-20 06:08:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 260. [2021-11-20 06:08:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.1011904761904763) internal successors, (185), 176 states have internal predecessors, (185), 57 states have call successors, (57), 29 states have call predecessors, (57), 34 states have return successors, (98), 54 states have call predecessors, (98), 55 states have call successors, (98) [2021-11-20 06:08:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 340 transitions. [2021-11-20 06:08:59,151 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 340 transitions. Word has length 126 [2021-11-20 06:08:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:59,152 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 340 transitions. [2021-11-20 06:08:59,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 30 states have internal predecessors, (71), 13 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-20 06:08:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 340 transitions. [2021-11-20 06:08:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 06:08:59,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:59,156 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:08:59,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:59,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:59,369 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2081008992, now seen corresponding path program 1 times [2021-11-20 06:08:59,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974851730] [2021-11-20 06:08:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:59,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:59,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:08:59,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401215893] [2021-11-20 06:08:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:59,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:59,417 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:59,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 06:08:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:59,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 06:08:59,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:01,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 06:09:01,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 06:09:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-20 06:09:01,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:09:01,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:01,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974851730] [2021-11-20 06:09:01,722 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:09:01,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401215893] [2021-11-20 06:09:01,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401215893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:09:01,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:09:01,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:09:01,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70169202] [2021-11-20 06:09:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:09:01,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:09:01,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:09:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:09:01,724 INFO L87 Difference]: Start difference. First operand 260 states and 340 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 06:09:03,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:03,844 INFO L93 Difference]: Finished difference Result 413 states and 540 transitions. [2021-11-20 06:09:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:09:03,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 129 [2021-11-20 06:09:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:03,848 INFO L225 Difference]: With dead ends: 413 [2021-11-20 06:09:03,849 INFO L226 Difference]: Without dead ends: 307 [2021-11-20 06:09:03,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:09:03,851 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 85 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:03,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1016 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 294 Invalid, 0 Unknown, 51 Unchecked, 1.3s Time] [2021-11-20 06:09:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-20 06:09:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 260. [2021-11-20 06:09:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.0952380952380953) internal successors, (184), 176 states have internal predecessors, (184), 57 states have call successors, (57), 29 states have call predecessors, (57), 34 states have return successors, (98), 54 states have call predecessors, (98), 55 states have call successors, (98) [2021-11-20 06:09:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 339 transitions. [2021-11-20 06:09:03,882 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 339 transitions. Word has length 129 [2021-11-20 06:09:03,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:03,882 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 339 transitions. [2021-11-20 06:09:03,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 5 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-20 06:09:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 339 transitions. [2021-11-20 06:09:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 06:09:03,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:03,886 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:09:03,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-20 06:09:04,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:04,102 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 495796666, now seen corresponding path program 1 times [2021-11-20 06:09:04,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:04,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274874429] [2021-11-20 06:09:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:04,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:04,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:09:04,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227313333] [2021-11-20 06:09:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:04,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:04,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:04,156 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:09:04,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 06:09:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:04,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-20 06:09:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:04,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:09:13,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:13,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:09:13,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:13,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:09:16,188 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-20 06:09:16,765 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:09:16,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2021-11-20 06:09:16,810 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:09:16,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-11-20 06:09:16,851 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:09:16,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-20 06:09:17,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 06:09:17,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 06:09:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 78 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 06:09:17,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:09:18,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:18,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274874429] [2021-11-20 06:09:18,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:09:18,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227313333] [2021-11-20 06:09:18,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227313333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:09:18,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:09:18,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-20 06:09:18,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484999998] [2021-11-20 06:09:18,861 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:09:18,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:09:18,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:09:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=196, Unknown=3, NotChecked=28, Total=272 [2021-11-20 06:09:18,862 INFO L87 Difference]: Start difference. First operand 260 states and 339 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-20 06:09:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:26,715 INFO L93 Difference]: Finished difference Result 373 states and 475 transitions. [2021-11-20 06:09:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:09:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 131 [2021-11-20 06:09:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:26,727 INFO L225 Difference]: With dead ends: 373 [2021-11-20 06:09:26,727 INFO L226 Difference]: Without dead ends: 260 [2021-11-20 06:09:26,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=68, Invalid=310, Unknown=6, NotChecked=36, Total=420 [2021-11-20 06:09:26,731 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 63 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:26,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 624 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 353 Invalid, 0 Unknown, 506 Unchecked, 1.5s Time] [2021-11-20 06:09:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-20 06:09:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-20 06:09:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.0952380952380953) internal successors, (184), 176 states have internal predecessors, (184), 57 states have call successors, (57), 29 states have call predecessors, (57), 34 states have return successors, (97), 54 states have call predecessors, (97), 55 states have call successors, (97) [2021-11-20 06:09:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 338 transitions. [2021-11-20 06:09:26,762 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 338 transitions. Word has length 131 [2021-11-20 06:09:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:26,763 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 338 transitions. [2021-11-20 06:09:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-20 06:09:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 338 transitions. [2021-11-20 06:09:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 06:09:26,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:26,767 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 06:09:26,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:09:26,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-20 06:09:26,994 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -111698537, now seen corresponding path program 1 times [2021-11-20 06:09:26,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:26,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022968008] [2021-11-20 06:09:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:27,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:09:27,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440322408] [2021-11-20 06:09:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:27,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:27,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:27,064 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:09:27,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ffd2aab-5aa2-4860-bb2d-0655e7ca0aad/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process