./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8 --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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:53:56,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:53:56,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:53:56,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:53:56,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:53:56,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:53:56,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:53:56,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:53:56,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:53:56,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:53:56,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:53:56,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:53:56,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:53:56,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:53:56,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:53:56,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:53:56,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:53:56,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:53:56,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:53:56,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:53:56,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:53:56,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:53:56,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:53:56,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:53:56,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:53:56,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:53:56,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:53:56,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:53:56,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:53:56,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:53:56,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:53:56,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:53:56,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:53:56,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:53:56,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:53:56,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:53:56,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:53:56,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:53:56,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:53:56,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:53:56,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:53:56,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 16:53:56,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:53:56,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:53:56,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:53:56,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:53:56,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:53:56,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:53:56,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:53:56,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:53:56,567 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:53:56,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:53:56,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:53:56,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:53:56,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:53:56,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:53:56,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:53:56,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:53:56,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:53:56,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:53:56,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:53:56,571 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:53:56,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:53:56,571 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:53:56,571 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2022-12-13 16:53:56,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:53:56,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:53:56,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:53:56,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:53:56,757 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:53:56,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2022-12-13 16:53:59,403 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:53:59,749 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:53:59,750 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2022-12-13 16:53:59,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/data/2bdb959c3/3c7ed7c3e5b44c87b72c839af92185c6/FLAG76e59e129 [2022-12-13 16:53:59,787 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/data/2bdb959c3/3c7ed7c3e5b44c87b72c839af92185c6 [2022-12-13 16:53:59,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:53:59,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:53:59,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:53:59,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:53:59,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:53:59,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:59" (1/1) ... [2022-12-13 16:53:59,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b979b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:53:59, skipping insertion in model container [2022-12-13 16:53:59,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:53:59" (1/1) ... [2022-12-13 16:53:59,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:53:59,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:54:00,068 WARN L237 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_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2022-12-13 16:54:00,074 WARN L237 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_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2022-12-13 16:54:00,627 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 16:54:00,684 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,685 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,685 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,686 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,687 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,696 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,697 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,698 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,698 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,700 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,701 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,701 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,701 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:00,787 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:00,787 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:00,788 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:00,793 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 16:54:00,795 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 16:54:00,795 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 16:54:01,076 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 16:54:01,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 16:54:01,078 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 16:54:01,079 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 16:54:01,081 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 16:54:01,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 16:54:01,083 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 16:54:01,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 16:54:01,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 16:54:01,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 16:54:01,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 16:54:01,232 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,238 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,285 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:54:01,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:54:01,319 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:54:01,351 WARN L237 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_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2022-12-13 16:54:01,352 WARN L237 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_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2022-12-13 16:54:01,384 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 16:54:01,395 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,395 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,395 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,396 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,396 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,401 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,401 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,402 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,402 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,403 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,403 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,404 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,404 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,408 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:01,409 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:01,409 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 16:54:01,411 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 16:54:01,412 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 16:54:01,413 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 16:54:01,426 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 16:54:01,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 16:54:01,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 16:54:01,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 16:54:01,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 16:54:01,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 16:54:01,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 16:54:01,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 16:54:01,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 16:54:01,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 16:54:01,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 16:54:01,441 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,445 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 16:54:01,457 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 16:54:01,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:54:01,586 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:54:01,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01 WrapperNode [2022-12-13 16:54:01,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:54:01,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:54:01,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:54:01,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:54:01,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,676 INFO L138 Inliner]: procedures = 690, calls = 1578, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 584 [2022-12-13 16:54:01,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:54:01,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:54:01,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:54:01,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:54:01,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:54:01,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:54:01,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:54:01,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:54:01,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (1/1) ... [2022-12-13 16:54:01,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:54:01,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:01,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:54:01,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-12-13 16:54:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-13 16:54:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 16:54:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 16:54:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 16:54:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 16:54:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:54:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 16:54:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-13 16:54:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:54:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2022-12-13 16:54:01,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 16:54:01,793 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 16:54:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 16:54:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-13 16:54:01,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-13 16:54:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:54:01,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:54:02,017 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:54:02,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:54:02,737 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:54:02,744 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:54:02,744 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 16:54:02,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:54:02 BoogieIcfgContainer [2022-12-13 16:54:02,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:54:02,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:54:02,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:54:02,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:54:02,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:53:59" (1/3) ... [2022-12-13 16:54:02,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee5ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:54:02, skipping insertion in model container [2022-12-13 16:54:02,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:54:01" (2/3) ... [2022-12-13 16:54:02,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee5ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:54:02, skipping insertion in model container [2022-12-13 16:54:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:54:02" (3/3) ... [2022-12-13 16:54:02,754 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2022-12-13 16:54:02,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:54:02,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:54:02,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:54:02,811 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@738e630b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:54:02,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:54:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 16:54:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 16:54:02,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:02,822 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:02,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 118758327, now seen corresponding path program 1 times [2022-12-13 16:54:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:02,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079912862] [2022-12-13 16:54:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:54:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 16:54:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:54:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 16:54:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 16:54:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 16:54:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:54:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 16:54:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:54:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 16:54:03,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:03,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079912862] [2022-12-13 16:54:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079912862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:03,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:03,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:54:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725737348] [2022-12-13 16:54:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:54:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:54:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:03,326 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 16:54:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:03,578 INFO L93 Difference]: Finished difference Result 205 states and 276 transitions. [2022-12-13 16:54:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:54:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2022-12-13 16:54:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:03,587 INFO L225 Difference]: With dead ends: 205 [2022-12-13 16:54:03,587 INFO L226 Difference]: Without dead ends: 106 [2022-12-13 16:54:03,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:54:03,592 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:03,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 130 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 16:54:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-12-13 16:54:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2022-12-13 16:54:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 16:54:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-12-13 16:54:03,627 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 60 [2022-12-13 16:54:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:03,628 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-12-13 16:54:03,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 16:54:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-12-13 16:54:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 16:54:03,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:03,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:54:03,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 519821299, now seen corresponding path program 1 times [2022-12-13 16:54:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:03,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635919564] [2022-12-13 16:54:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 16:54:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 16:54:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 16:54:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 16:54:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 16:54:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 16:54:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 16:54:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 16:54:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 16:54:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:54:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:04,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635919564] [2022-12-13 16:54:04,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635919564] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:54:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079517576] [2022-12-13 16:54:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:04,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:04,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:04,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:04,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:54:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:54:04,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:54:04,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:04,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079517576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:04,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:54:04,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-13 16:54:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875979690] [2022-12-13 16:54:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:54:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:54:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:54:04,413 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 16:54:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:04,582 INFO L93 Difference]: Finished difference Result 160 states and 199 transitions. [2022-12-13 16:54:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:54:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2022-12-13 16:54:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:04,584 INFO L225 Difference]: With dead ends: 160 [2022-12-13 16:54:04,584 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 16:54:04,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:54:04,586 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:04,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 292 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:54:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 16:54:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 16:54:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-12-13 16:54:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2022-12-13 16:54:04,601 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 60 [2022-12-13 16:54:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:04,601 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2022-12-13 16:54:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 16:54:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2022-12-13 16:54:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 16:54:04,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:04,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:04,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:04,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:04,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 682812913, now seen corresponding path program 1 times [2022-12-13 16:54:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:04,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516830363] [2022-12-13 16:54:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:04,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242683787] [2022-12-13 16:54:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:04,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:04,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:04,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:54:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:54:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 16:54:05,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:05,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:05,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516830363] [2022-12-13 16:54:05,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:05,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242683787] [2022-12-13 16:54:05,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242683787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:05,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:05,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:54:05,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205923737] [2022-12-13 16:54:05,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:05,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:54:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:54:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:54:05,319 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 16:54:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:05,349 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2022-12-13 16:54:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:54:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 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 75 [2022-12-13 16:54:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:05,351 INFO L225 Difference]: With dead ends: 167 [2022-12-13 16:54:05,351 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 16:54:05,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:54:05,353 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:54:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 16:54:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2022-12-13 16:54:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-12-13 16:54:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-12-13 16:54:05,374 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 75 [2022-12-13 16:54:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:05,374 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-12-13 16:54:05,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 16:54:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-12-13 16:54:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 16:54:05,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:05,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:05,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:54:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 16:54:05,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1526818415, now seen corresponding path program 1 times [2022-12-13 16:54:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:05,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934188839] [2022-12-13 16:54:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:05,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:05,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201893751] [2022-12-13 16:54:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:05,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:05,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:05,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:05,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:54:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 16:54:06,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 16:54:06,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:06,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934188839] [2022-12-13 16:54:06,160 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:06,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201893751] [2022-12-13 16:54:06,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201893751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:06,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:06,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:54:06,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027712786] [2022-12-13 16:54:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:06,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:54:06,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:54:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:54:06,162 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 16:54:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:06,372 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2022-12-13 16:54:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:54:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2022-12-13 16:54:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:06,374 INFO L225 Difference]: With dead ends: 161 [2022-12-13 16:54:06,374 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 16:54:06,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:54:06,375 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:06,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 406 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:54:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 16:54:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 16:54:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 16:54:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-12-13 16:54:06,386 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 75 [2022-12-13 16:54:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-12-13 16:54:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 16:54:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-12-13 16:54:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:54:06,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:06,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:06,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:54:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:06,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1686649477, now seen corresponding path program 1 times [2022-12-13 16:54:06,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:06,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756906989] [2022-12-13 16:54:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:06,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:06,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096948772] [2022-12-13 16:54:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:06,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:06,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:06,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:54:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:07,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 16:54:07,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:07,413 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_311 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_311))) (exists ((v_ArrVal_312 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_312) |c_#memory_$Pointer$.offset|)))) is different from true [2022-12-13 16:54:07,721 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 16:54:07,721 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-12-13 16:54:07,733 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 16:54:07,733 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 22 [2022-12-13 16:54:07,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 16:54:07,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 16:54:07,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 16:54:07,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 16:54:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 16:54:07,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:07,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:07,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756906989] [2022-12-13 16:54:07,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:07,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096948772] [2022-12-13 16:54:07,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096948772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:07,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:07,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-13 16:54:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106111572] [2022-12-13 16:54:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 16:54:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 16:54:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=255, Unknown=10, NotChecked=32, Total=342 [2022-12-13 16:54:07,840 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 16:54:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:10,858 INFO L93 Difference]: Finished difference Result 279 states and 370 transitions. [2022-12-13 16:54:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 16:54:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 105 [2022-12-13 16:54:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:10,860 INFO L225 Difference]: With dead ends: 279 [2022-12-13 16:54:10,860 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 16:54:10,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=1145, Unknown=50, NotChecked=72, Total=1482 [2022-12-13 16:54:10,862 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 201 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 132 mSolverCounterUnsat, 110 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 110 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:10,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 674 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1953 Invalid, 110 Unknown, 309 Unchecked, 2.3s Time] [2022-12-13 16:54:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 16:54:10,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 191. [2022-12-13 16:54:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 126 states have internal predecessors, (140), 44 states have call successors, (44), 19 states have call predecessors, (44), 24 states have return successors, (67), 45 states have call predecessors, (67), 42 states have call successors, (67) [2022-12-13 16:54:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2022-12-13 16:54:10,881 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 105 [2022-12-13 16:54:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:10,881 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2022-12-13 16:54:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 16:54:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2022-12-13 16:54:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:54:10,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:10,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:10,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:11,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:11,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 740789151, now seen corresponding path program 1 times [2022-12-13 16:54:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:11,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056943724] [2022-12-13 16:54:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:11,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:11,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:11,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431027941] [2022-12-13 16:54:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:11,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:11,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:11,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:11,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:54:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:11,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:54:11,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 16:54:11,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056943724] [2022-12-13 16:54:11,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431027941] [2022-12-13 16:54:11,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431027941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:11,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:11,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:54:11,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313060032] [2022-12-13 16:54:11,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:11,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:54:11,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:54:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:54:11,557 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 16:54:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:11,727 INFO L93 Difference]: Finished difference Result 355 states and 495 transitions. [2022-12-13 16:54:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:54:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2022-12-13 16:54:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:11,730 INFO L225 Difference]: With dead ends: 355 [2022-12-13 16:54:11,730 INFO L226 Difference]: Without dead ends: 206 [2022-12-13 16:54:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:54:11,732 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 10 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:11,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 421 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:54:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-13 16:54:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 194. [2022-12-13 16:54:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 125 states have (on average 1.144) internal successors, (143), 129 states have internal predecessors, (143), 44 states have call successors, (44), 19 states have call predecessors, (44), 24 states have return successors, (67), 45 states have call predecessors, (67), 42 states have call successors, (67) [2022-12-13 16:54:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2022-12-13 16:54:11,759 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 113 [2022-12-13 16:54:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:11,759 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2022-12-13 16:54:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 16:54:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2022-12-13 16:54:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:54:11,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:11,762 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:11,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 16:54:11,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 16:54:11,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash -434110869, now seen corresponding path program 1 times [2022-12-13 16:54:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:11,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486982167] [2022-12-13 16:54:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:12,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:12,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147396753] [2022-12-13 16:54:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:12,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:12,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:54:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-13 16:54:12,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:12,524 INFO L350 Elim1Store]: Elim1 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 34 [2022-12-13 16:54:12,528 INFO L350 Elim1Store]: Elim1 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 34 [2022-12-13 16:54:12,628 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_540 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_539 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_540))) (= |c_#memory_$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| v_ArrVal_539))))) is different from true [2022-12-13 16:54:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 16:54:12,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:54:12,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:12,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486982167] [2022-12-13 16:54:12,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:12,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147396753] [2022-12-13 16:54:12,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147396753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:54:12,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:54:12,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 16:54:12,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975849316] [2022-12-13 16:54:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:54:12,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 16:54:12,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 16:54:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=197, Unknown=7, NotChecked=28, Total=272 [2022-12-13 16:54:12,910 INFO L87 Difference]: Start difference. First operand 194 states and 254 transitions. Second operand has 17 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 16:54:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:17,123 INFO L93 Difference]: Finished difference Result 304 states and 396 transitions. [2022-12-13 16:54:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 16:54:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 107 [2022-12-13 16:54:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:17,125 INFO L225 Difference]: With dead ends: 304 [2022-12-13 16:54:17,125 INFO L226 Difference]: Without dead ends: 216 [2022-12-13 16:54:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=145, Invalid=718, Unknown=11, NotChecked=56, Total=930 [2022-12-13 16:54:17,126 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 129 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 65 mSolverCounterUnsat, 51 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 51 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:17,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 425 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1092 Invalid, 51 Unknown, 172 Unchecked, 1.7s Time] [2022-12-13 16:54:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-12-13 16:54:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 195. [2022-12-13 16:54:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 125 states have (on average 1.144) internal successors, (143), 130 states have internal predecessors, (143), 45 states have call successors, (45), 19 states have call predecessors, (45), 24 states have return successors, (69), 45 states have call predecessors, (69), 43 states have call successors, (69) [2022-12-13 16:54:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-12-13 16:54:17,158 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 107 [2022-12-13 16:54:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:17,158 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-12-13 16:54:17,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 16:54:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-12-13 16:54:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:54:17,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:17,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:17,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:54:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:17,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 25549997, now seen corresponding path program 1 times [2022-12-13 16:54:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:17,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182719208] [2022-12-13 16:54:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:17,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:17,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:17,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093406753] [2022-12-13 16:54:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:17,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:17,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:54:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:17,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-13 16:54:17,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:17,781 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:54:18,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:18,114 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:54:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:18,122 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:54:18,231 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_648 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_648))) (exists ((v_ArrVal_649 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_649)))) is different from true [2022-12-13 16:54:18,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:18,638 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 28 [2022-12-13 16:54:18,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:18,643 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 16 [2022-12-13 16:54:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 53 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:54:18,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182719208] [2022-12-13 16:54:19,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093406753] [2022-12-13 16:54:19,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093406753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:54:19,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:54:19,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-12-13 16:54:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119712292] [2022-12-13 16:54:19,380 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 16:54:19,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 16:54:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=4, NotChecked=48, Total=702 [2022-12-13 16:54:19,382 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-13 16:54:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:22,284 INFO L93 Difference]: Finished difference Result 354 states and 475 transitions. [2022-12-13 16:54:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 16:54:22,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-12-13 16:54:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:22,286 INFO L225 Difference]: With dead ends: 354 [2022-12-13 16:54:22,286 INFO L226 Difference]: Without dead ends: 244 [2022-12-13 16:54:22,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 135 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=177, Invalid=1380, Unknown=7, NotChecked=76, Total=1640 [2022-12-13 16:54:22,287 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 114 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 60 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:22,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 651 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1640 Invalid, 40 Unknown, 217 Unchecked, 2.4s Time] [2022-12-13 16:54:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-12-13 16:54:22,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 205. [2022-12-13 16:54:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 139 states have internal predecessors, (150), 46 states have call successors, (46), 20 states have call predecessors, (46), 26 states have return successors, (82), 45 states have call predecessors, (82), 44 states have call successors, (82) [2022-12-13 16:54:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 278 transitions. [2022-12-13 16:54:22,304 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 278 transitions. Word has length 107 [2022-12-13 16:54:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:22,304 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 278 transitions. [2022-12-13 16:54:22,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-13 16:54:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 278 transitions. [2022-12-13 16:54:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 16:54:22,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:22,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:54:22,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:54:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:22,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash -624481528, now seen corresponding path program 1 times [2022-12-13 16:54:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:22,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707135792] [2022-12-13 16:54:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:22,579 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577941077] [2022-12-13 16:54:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:22,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:22,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:22,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:22,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:54:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:22,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 16:54:22,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:22,947 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 9 [2022-12-13 16:54:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 16:54:23,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:54:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:23,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707135792] [2022-12-13 16:54:23,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577941077] [2022-12-13 16:54:23,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577941077] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:54:23,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:54:23,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 27 [2022-12-13 16:54:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848842618] [2022-12-13 16:54:23,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:23,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 16:54:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:23,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 16:54:23,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-12-13 16:54:23,691 INFO L87 Difference]: Start difference. First operand 205 states and 278 transitions. Second operand has 27 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-12-13 16:54:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:54:24,234 INFO L93 Difference]: Finished difference Result 352 states and 471 transitions. [2022-12-13 16:54:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:54:24,235 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 125 [2022-12-13 16:54:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:54:24,237 INFO L225 Difference]: With dead ends: 352 [2022-12-13 16:54:24,237 INFO L226 Difference]: Without dead ends: 212 [2022-12-13 16:54:24,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-12-13 16:54:24,239 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 27 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:54:24,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2605 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:54:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-12-13 16:54:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 197. [2022-12-13 16:54:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.1328125) internal successors, (145), 135 states have internal predecessors, (145), 43 states have call successors, (43), 20 states have call predecessors, (43), 25 states have return successors, (71), 41 states have call predecessors, (71), 41 states have call successors, (71) [2022-12-13 16:54:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 259 transitions. [2022-12-13 16:54:24,255 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 259 transitions. Word has length 125 [2022-12-13 16:54:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:54:24,255 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 259 transitions. [2022-12-13 16:54:24,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 4.409090909090909) internal successors, (97), 20 states have internal predecessors, (97), 7 states have call successors, (23), 3 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-12-13 16:54:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 259 transitions. [2022-12-13 16:54:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:54:24,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:54:24,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:54:24,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:54:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:24,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:54:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:54:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1815581560, now seen corresponding path program 1 times [2022-12-13 16:54:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:54:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246335366] [2022-12-13 16:54:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:54:24,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:54:24,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337253374] [2022-12-13 16:54:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:54:24,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:54:24,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:54:24,506 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:54:24,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:54:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:54:24,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 16:54:24,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:54:24,870 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:54:24,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:54:24,972 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 21 [2022-12-13 16:54:24,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-12-13 16:54:25,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:25,098 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 25 [2022-12-13 16:54:25,182 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_880 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_880))) is different from true [2022-12-13 16:54:25,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:54:25,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-13 16:54:25,253 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 16:54:25,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 16:54:31,991 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_882 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_882)) |c_#memory_$Pointer$.base|)) is different from true [2022-12-13 16:54:40,258 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 23 [2022-12-13 16:54:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 54 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-12-13 16:54:40,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:54:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:54:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246335366] [2022-12-13 16:54:42,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:54:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337253374] [2022-12-13 16:54:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337253374] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:54:42,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:54:42,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-12-13 16:54:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264198476] [2022-12-13 16:54:42,540 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 16:54:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 16:54:42,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:54:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 16:54:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=737, Unknown=42, NotChecked=114, Total=992 [2022-12-13 16:54:42,541 INFO L87 Difference]: Start difference. First operand 197 states and 259 transitions. Second operand has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) [2022-12-13 16:54:45,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 16:54:49,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:54:51,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:06,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 16:55:27,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:29,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:31,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:40,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:42,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:44,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:46,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 16:55:48,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:50,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:52,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:54,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:55:56,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:08,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:39,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:47,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:49,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:52,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:54,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:56,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:56:58,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:10,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:12,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:26,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:28,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:44,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:57:46,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:06,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:09,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:19,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:21,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:23,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:25,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:33,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:35,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:37,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:39,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:41,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:58:42,683 INFO L93 Difference]: Finished difference Result 522 states and 685 transitions. [2022-12-13 16:58:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 16:58:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) Word has length 113 [2022-12-13 16:58:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:58:42,687 INFO L225 Difference]: With dead ends: 522 [2022-12-13 16:58:42,687 INFO L226 Difference]: Without dead ends: 373 [2022-12-13 16:58:42,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2086 ImplicationChecksByTransitivity, 170.5s TimeCoverageRelationStatistics Valid=763, Invalid=5969, Unknown=248, NotChecked=330, Total=7310 [2022-12-13 16:58:42,690 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 712 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 319 mSolverCounterUnsat, 128 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 128 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 86.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:58:42,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 590 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 2167 Invalid, 128 Unknown, 620 Unchecked, 86.7s Time] [2022-12-13 16:58:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-12-13 16:58:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 279. [2022-12-13 16:58:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 177 states have (on average 1.1355932203389831) internal successors, (201), 185 states have internal predecessors, (201), 67 states have call successors, (67), 27 states have call predecessors, (67), 34 states have return successors, (98), 66 states have call predecessors, (98), 63 states have call successors, (98) [2022-12-13 16:58:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 366 transitions. [2022-12-13 16:58:42,728 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 366 transitions. Word has length 113 [2022-12-13 16:58:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:58:42,728 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 366 transitions. [2022-12-13 16:58:42,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 12 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (16), 10 states have call predecessors, (16), 12 states have call successors, (16) [2022-12-13 16:58:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 366 transitions. [2022-12-13 16:58:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:58:42,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:58:42,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:58:42,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:58:42,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:42,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:58:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:58:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1296096621, now seen corresponding path program 1 times [2022-12-13 16:58:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:58:42,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243856146] [2022-12-13 16:58:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:58:43,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:58:43,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019766420] [2022-12-13 16:58:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:58:43,004 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:58:43,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:58:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 16:58:43,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:58:43,318 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:58:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:58:43,536 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:58:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:58:43,542 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:58:43,654 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_997 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_997) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_998 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_998)))) is different from true [2022-12-13 16:58:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 16:58:43,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:58:43,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:58:43,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243856146] [2022-12-13 16:58:43,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:58:43,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019766420] [2022-12-13 16:58:43,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019766420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:58:43,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:58:43,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 16:58:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403746238] [2022-12-13 16:58:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:58:43,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 16:58:43,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:58:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 16:58:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=5, NotChecked=24, Total=210 [2022-12-13 16:58:43,979 INFO L87 Difference]: Start difference. First operand 279 states and 366 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 16:58:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:58:46,277 INFO L93 Difference]: Finished difference Result 505 states and 655 transitions. [2022-12-13 16:58:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:58:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 107 [2022-12-13 16:58:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:58:46,279 INFO L225 Difference]: With dead ends: 505 [2022-12-13 16:58:46,279 INFO L226 Difference]: Without dead ends: 331 [2022-12-13 16:58:46,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=491, Unknown=9, NotChecked=46, Total=650 [2022-12-13 16:58:46,280 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 167 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 86 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:58:46,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 332 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 977 Invalid, 52 Unknown, 187 Unchecked, 1.9s Time] [2022-12-13 16:58:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-12-13 16:58:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 275. [2022-12-13 16:58:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 174 states have (on average 1.1379310344827587) internal successors, (198), 181 states have internal predecessors, (198), 67 states have call successors, (67), 27 states have call predecessors, (67), 33 states have return successors, (87), 66 states have call predecessors, (87), 63 states have call successors, (87) [2022-12-13 16:58:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 352 transitions. [2022-12-13 16:58:46,302 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 352 transitions. Word has length 107 [2022-12-13 16:58:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:58:46,302 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 352 transitions. [2022-12-13 16:58:46,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 13 states have internal predecessors, (55), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 16:58:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 352 transitions. [2022-12-13 16:58:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 16:58:46,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:58:46,303 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-12-13 16:58:46,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:58:46,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:46,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:58:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:58:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1809787448, now seen corresponding path program 1 times [2022-12-13 16:58:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:58:46,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108564259] [2022-12-13 16:58:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:58:46,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:58:46,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370746569] [2022-12-13 16:58:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:46,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:46,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:58:46,544 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:58:46,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:58:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:46,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 16:58:46,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:58:46,849 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:58:46,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 16:58:47,081 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:58:47,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 16:58:47,101 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 24 [2022-12-13 16:58:47,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:58:47,183 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-12-13 16:58:47,293 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1127 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1127) |c_#memory_int|)) is different from true [2022-12-13 16:58:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:58:47,489 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 18 [2022-12-13 16:58:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 16:58:47,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:58:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:58:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108564259] [2022-12-13 16:58:47,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:58:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370746569] [2022-12-13 16:58:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370746569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:58:47,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:58:47,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-12-13 16:58:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164868899] [2022-12-13 16:58:47,710 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 16:58:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 16:58:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:58:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 16:58:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=347, Unknown=6, NotChecked=38, Total=462 [2022-12-13 16:58:47,711 INFO L87 Difference]: Start difference. First operand 275 states and 352 transitions. Second operand has 21 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 16:58:49,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:58:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:58:53,847 INFO L93 Difference]: Finished difference Result 694 states and 898 transitions. [2022-12-13 16:58:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 16:58:53,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 123 [2022-12-13 16:58:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:58:53,850 INFO L225 Difference]: With dead ends: 694 [2022-12-13 16:58:53,850 INFO L226 Difference]: Without dead ends: 589 [2022-12-13 16:58:53,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 172 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=1858, Unknown=49, NotChecked=92, Total=2352 [2022-12-13 16:58:53,851 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 397 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 240 mSolverCounterUnsat, 106 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 106 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:58:53,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 580 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1747 Invalid, 106 Unknown, 233 Unchecked, 5.1s Time] [2022-12-13 16:58:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-12-13 16:58:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 533. [2022-12-13 16:58:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 341 states have (on average 1.1348973607038124) internal successors, (387), 353 states have internal predecessors, (387), 125 states have call successors, (125), 56 states have call predecessors, (125), 66 states have return successors, (193), 123 states have call predecessors, (193), 118 states have call successors, (193) [2022-12-13 16:58:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 705 transitions. [2022-12-13 16:58:53,909 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 705 transitions. Word has length 123 [2022-12-13 16:58:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:58:53,909 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 705 transitions. [2022-12-13 16:58:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 16:58:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 705 transitions. [2022-12-13 16:58:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 16:58:53,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:58:53,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-12-13 16:58:53,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 16:58:54,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 16:58:54,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:58:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:58:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1186286790, now seen corresponding path program 1 times [2022-12-13 16:58:54,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:58:54,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850273844] [2022-12-13 16:58:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:54,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:58:54,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:58:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053792454] [2022-12-13 16:58:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:58:54,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:58:54,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:58:54,168 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:58:54,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:58:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:58:54,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 115 conjunts are in the unsatisfiable core [2022-12-13 16:58:54,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:58:54,584 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:58:54,681 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 9 [2022-12-13 16:58:54,806 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:58:54,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 16:58:55,354 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-12-13 16:58:55,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-12-13 16:58:55,544 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:58:55,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 16:58:55,807 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1278 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1278))) is different from true [2022-12-13 16:58:56,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:58:56,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:58:56,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2022-12-13 16:58:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 22 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 16:58:56,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:58:56,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:58:56,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850273844] [2022-12-13 16:58:56,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:58:56,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053792454] [2022-12-13 16:58:56,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053792454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:58:56,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:58:56,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-12-13 16:58:56,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190800209] [2022-12-13 16:58:56,412 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 16:58:56,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 16:58:56,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:58:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 16:58:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1277, Unknown=23, NotChecked=72, Total=1482 [2022-12-13 16:58:56,413 INFO L87 Difference]: Start difference. First operand 533 states and 705 transitions. Second operand has 35 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 10 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 16:58:58,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 16:59:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:59:08,784 INFO L93 Difference]: Finished difference Result 1343 states and 1865 transitions. [2022-12-13 16:59:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-13 16:59:08,785 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 10 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) Word has length 117 [2022-12-13 16:59:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:59:08,790 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 16:59:08,790 INFO L226 Difference]: Without dead ends: 917 [2022-12-13 16:59:08,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=780, Invalid=8239, Unknown=105, NotChecked=188, Total=9312 [2022-12-13 16:59:08,793 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 331 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 290 mSolverCounterUnsat, 160 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 5086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 160 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:59:08,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 783 Invalid, 5086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 4378 Invalid, 160 Unknown, 258 Unchecked, 8.7s Time] [2022-12-13 16:59:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-12-13 16:59:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 696. [2022-12-13 16:59:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 459 states have (on average 1.1067538126361656) internal successors, (508), 472 states have internal predecessors, (508), 135 states have call successors, (135), 92 states have call predecessors, (135), 101 states have return successors, (258), 131 states have call predecessors, (258), 134 states have call successors, (258) [2022-12-13 16:59:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 901 transitions. [2022-12-13 16:59:08,877 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 901 transitions. Word has length 117 [2022-12-13 16:59:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:59:08,877 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 901 transitions. [2022-12-13 16:59:08,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 10 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 16:59:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 901 transitions. [2022-12-13 16:59:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 16:59:08,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:59:08,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:59:08,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 16:59:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:59:09,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:59:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:59:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1309044589, now seen corresponding path program 1 times [2022-12-13 16:59:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:59:09,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384841291] [2022-12-13 16:59:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:59:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:59:09,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:59:09,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357189384] [2022-12-13 16:59:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:59:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:59:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:59:09,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:59:09,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:59:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:59:09,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-13 16:59:09,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:59:09,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 16:59:09,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 16:59:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 16:59:09,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:59:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:59:10,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:59:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384841291] [2022-12-13 16:59:10,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:59:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357189384] [2022-12-13 16:59:10,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357189384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:59:10,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:59:10,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 24 [2022-12-13 16:59:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638298147] [2022-12-13 16:59:10,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:59:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:59:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:59:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:59:10,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2022-12-13 16:59:10,132 INFO L87 Difference]: Start difference. First operand 696 states and 901 transitions. Second operand has 24 states, 20 states have (on average 5.0) internal successors, (100), 17 states have internal predecessors, (100), 7 states have call successors, (25), 4 states have call predecessors, (25), 8 states have return successors, (26), 9 states have call predecessors, (26), 6 states have call successors, (26) [2022-12-13 16:59:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:59:10,841 INFO L93 Difference]: Finished difference Result 1085 states and 1339 transitions. [2022-12-13 16:59:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 16:59:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 5.0) internal successors, (100), 17 states have internal predecessors, (100), 7 states have call successors, (25), 4 states have call predecessors, (25), 8 states have return successors, (26), 9 states have call predecessors, (26), 6 states have call successors, (26) Word has length 119 [2022-12-13 16:59:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:59:10,843 INFO L225 Difference]: With dead ends: 1085 [2022-12-13 16:59:10,843 INFO L226 Difference]: Without dead ends: 401 [2022-12-13 16:59:10,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 209 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 16:59:10,845 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 82 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:59:10,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1839 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 16:59:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-12-13 16:59:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 360. [2022-12-13 16:59:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 239 states have (on average 1.104602510460251) internal successors, (264), 246 states have internal predecessors, (264), 69 states have call successors, (69), 48 states have call predecessors, (69), 51 states have return successors, (102), 65 states have call predecessors, (102), 68 states have call successors, (102) [2022-12-13 16:59:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 435 transitions. [2022-12-13 16:59:10,883 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 435 transitions. Word has length 119 [2022-12-13 16:59:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:59:10,883 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 435 transitions. [2022-12-13 16:59:10,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 5.0) internal successors, (100), 17 states have internal predecessors, (100), 7 states have call successors, (25), 4 states have call predecessors, (25), 8 states have return successors, (26), 9 states have call predecessors, (26), 6 states have call successors, (26) [2022-12-13 16:59:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 435 transitions. [2022-12-13 16:59:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:59:10,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:59:10,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 16:59:10,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 16:59:11,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:59:11,085 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:59:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:59:11,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1827198087, now seen corresponding path program 1 times [2022-12-13 16:59:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:59:11,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190866335] [2022-12-13 16:59:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:59:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:59:11,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:59:11,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254344738] [2022-12-13 16:59:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:59:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:59:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:59:11,162 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:59:11,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:59:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:59:11,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 273 conjunts are in the unsatisfiable core [2022-12-13 16:59:11,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:59:11,783 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 16:59:11,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 16:59:11,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 16:59:12,325 INFO L321 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2022-12-13 16:59:12,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2022-12-13 16:59:13,517 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-12-13 16:59:13,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-12-13 16:59:14,069 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:59:14,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 16:59:19,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:59:19,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:59:19,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 16:59:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:59:19,899 INFO L321 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2022-12-13 16:59:19,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 157 [2022-12-13 16:59:19,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:59:19,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 88 [2022-12-13 16:59:21,094 INFO L321 Elim1Store]: treesize reduction 51, result has 42.7 percent of original size [2022-12-13 16:59:21,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 111 [2022-12-13 16:59:21,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 16:59:21,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 17:00:31,690 INFO L321 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-12-13 17:00:31,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-12-13 17:00:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 62 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 17:00:32,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:00:43,216 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 17:00:53,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:00:53,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190866335] [2022-12-13 17:00:53,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:00:53,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254344738] [2022-12-13 17:00:53,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254344738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:00:53,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:00:53,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2022-12-13 17:00:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653888051] [2022-12-13 17:00:53,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:00:53,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 17:00:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:00:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 17:00:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2980, Unknown=34, NotChecked=0, Total=3192 [2022-12-13 17:00:53,804 INFO L87 Difference]: Start difference. First operand 360 states and 435 transitions. Second operand has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 14 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-13 17:00:57,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:01:24,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:01:26,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:01:28,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:02:45,821 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 143 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:02:48,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:02:51,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:02:54,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:02:56,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:02:58,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:03:14,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:03:17,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:03:41,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:03:43,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:03:46,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:20,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:22,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:25,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:29,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:40,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:41,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:44,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:46,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:04:49,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:15,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:24,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:27,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:29,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:31,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:33,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:37,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:41,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:44,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:47,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:51,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:53,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:05:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:56,614 INFO L93 Difference]: Finished difference Result 498 states and 602 transitions. [2022-12-13 17:05:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-13 17:05:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 14 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 105 [2022-12-13 17:05:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:56,618 INFO L225 Difference]: With dead ends: 498 [2022-12-13 17:05:56,618 INFO L226 Difference]: Without dead ends: 496 [2022-12-13 17:05:56,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4349 ImplicationChecksByTransitivity, 204.2s TimeCoverageRelationStatistics Valid=909, Invalid=14038, Unknown=59, NotChecked=0, Total=15006 [2022-12-13 17:05:56,622 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 374 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 6197 mSolverCounterSat, 252 mSolverCounterUnsat, 64 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 6197 IncrementalHoareTripleChecker+Invalid, 64 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:56,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1904 Invalid, 6513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 6197 Invalid, 64 Unknown, 0 Unchecked, 127.7s Time] [2022-12-13 17:05:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-12-13 17:05:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 400. [2022-12-13 17:05:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 265 states have (on average 1.1018867924528302) internal successors, (292), 272 states have internal predecessors, (292), 75 states have call successors, (75), 56 states have call predecessors, (75), 59 states have return successors, (113), 71 states have call predecessors, (113), 74 states have call successors, (113) [2022-12-13 17:05:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 480 transitions. [2022-12-13 17:05:56,713 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 480 transitions. Word has length 105 [2022-12-13 17:05:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:56,713 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 480 transitions. [2022-12-13 17:05:56,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 14 states have call successors, (16), 10 states have call predecessors, (16), 13 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-13 17:05:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 480 transitions. [2022-12-13 17:05:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 17:05:56,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:56,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 17:05:56,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:05:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:05:56,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 143037153, now seen corresponding path program 2 times [2022-12-13 17:05:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:56,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916693627] [2022-12-13 17:05:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:56,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:05:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979467839] [2022-12-13 17:05:56,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:05:56,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:56,969 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:56,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:05:57,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:05:57,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:05:57,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 17:05:57,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:57,701 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (exists ((v_ArrVal_1575 Int)) (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_1575)))) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_1574 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_1574)) |c_#memory_$Pointer$.base|)))) is different from true [2022-12-13 17:06:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 17:06:01,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:06:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:01,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916693627] [2022-12-13 17:06:01,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979467839] [2022-12-13 17:06:01,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979467839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:01,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:01,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 17:06:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752961722] [2022-12-13 17:06:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:06:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:06:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=167, Unknown=11, NotChecked=26, Total=240 [2022-12-13 17:06:01,102 INFO L87 Difference]: Start difference. First operand 400 states and 480 transitions. Second operand has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 17:06:07,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:18,356 INFO L93 Difference]: Finished difference Result 586 states and 705 transitions. [2022-12-13 17:06:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 17:06:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 107 [2022-12-13 17:06:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:18,358 INFO L225 Difference]: With dead ends: 586 [2022-12-13 17:06:18,358 INFO L226 Difference]: Without dead ends: 421 [2022-12-13 17:06:18,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=159, Invalid=755, Unknown=20, NotChecked=58, Total=992 [2022-12-13 17:06:18,360 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 109 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 45 mSolverCounterUnsat, 57 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 57 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:18,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 347 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 962 Invalid, 57 Unknown, 162 Unchecked, 5.6s Time] [2022-12-13 17:06:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-12-13 17:06:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 400. [2022-12-13 17:06:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 264 states have (on average 1.0984848484848484) internal successors, (290), 272 states have internal predecessors, (290), 76 states have call successors, (76), 56 states have call predecessors, (76), 59 states have return successors, (112), 71 states have call predecessors, (112), 75 states have call successors, (112) [2022-12-13 17:06:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 478 transitions. [2022-12-13 17:06:18,446 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 478 transitions. Word has length 107 [2022-12-13 17:06:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:18,446 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 478 transitions. [2022-12-13 17:06:18,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 17:06:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 478 transitions. [2022-12-13 17:06:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 17:06:18,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:18,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 17:06:18,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 17:06:18,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:06:18,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:18,651 INFO L85 PathProgramCache]: Analyzing trace with hash 548902687, now seen corresponding path program 1 times [2022-12-13 17:06:18,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:18,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536870703] [2022-12-13 17:06:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:18,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:18,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:06:18,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550493591] [2022-12-13 17:06:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:06:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:06:18,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:06:18,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:06:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:19,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 17:06:19,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:06:19,362 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1662 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1662) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1663 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1663))))) is different from true [2022-12-13 17:06:19,696 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-13 17:06:19,696 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 16 [2022-12-13 17:06:19,699 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 13 [2022-12-13 17:06:19,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 17:06:19,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 17:06:27,895 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:06:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 20 refuted. 5 times theorem prover too weak. 13 trivial. 3 not checked. [2022-12-13 17:06:28,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:06:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536870703] [2022-12-13 17:06:28,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:06:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550493591] [2022-12-13 17:06:28,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550493591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:06:28,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:06:28,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-12-13 17:06:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626969375] [2022-12-13 17:06:28,539 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:06:28,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 17:06:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 17:06:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=861, Unknown=30, NotChecked=60, Total=1056 [2022-12-13 17:06:28,541 INFO L87 Difference]: Start difference. First operand 400 states and 478 transitions. Second operand has 27 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 12 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-13 17:06:31,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:33,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:35,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:37,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:06:39,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:41,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:43,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:47,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:49,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:54,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:06:56,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:00,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:04,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:06,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:10,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:12,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:14,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:16,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:20,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:22,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:24,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:28,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:30,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:32,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:35,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:07:37,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:39,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:42,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:44,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:46,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:50,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 17:07:53,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:55,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:07:58,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:00,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:02,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:04,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:06,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:08,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:11,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:13,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:15,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:08:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:15,641 INFO L93 Difference]: Finished difference Result 661 states and 772 transitions. [2022-12-13 17:08:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 17:08:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 12 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) Word has length 113 [2022-12-13 17:08:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:15,644 INFO L225 Difference]: With dead ends: 661 [2022-12-13 17:08:15,644 INFO L226 Difference]: Without dead ends: 538 [2022-12-13 17:08:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=650, Invalid=4225, Unknown=99, NotChecked=138, Total=5112 [2022-12-13 17:08:15,645 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 282 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 191 mSolverCounterUnsat, 363 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 4725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 363 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 90.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:15,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 996 Invalid, 4725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3843 Invalid, 363 Unknown, 328 Unchecked, 90.6s Time] [2022-12-13 17:08:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-12-13 17:08:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 415. [2022-12-13 17:08:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 279 states have (on average 1.096774193548387) internal successors, (306), 286 states have internal predecessors, (306), 75 states have call successors, (75), 57 states have call predecessors, (75), 60 states have return successors, (109), 71 states have call predecessors, (109), 74 states have call successors, (109) [2022-12-13 17:08:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 490 transitions. [2022-12-13 17:08:15,723 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 490 transitions. Word has length 113 [2022-12-13 17:08:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:15,723 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 490 transitions. [2022-12-13 17:08:15,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 12 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-13 17:08:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 490 transitions. [2022-12-13 17:08:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 17:08:15,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:15,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-12-13 17:08:15,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 17:08:15,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:08:15,925 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 884294789, now seen corresponding path program 1 times [2022-12-13 17:08:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937072573] [2022-12-13 17:08:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:15,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:08:15,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813053236] [2022-12-13 17:08:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:15,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:08:15,985 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:08:15,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:08:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:16,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-13 17:08:16,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:08:16,693 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1785 Int) (v_ArrVal_1784 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1784)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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| v_ArrVal_1785))))) is different from true [2022-12-13 17:08:17,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:08:17,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:08:17,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-12-13 17:08:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:08:17,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:08:17,429 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-12-13 17:08:17,429 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 1 [2022-12-13 17:08:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 73 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:08:17,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:08:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:17,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937072573] [2022-12-13 17:08:17,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:08:17,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813053236] [2022-12-13 17:08:17,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813053236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:08:17,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:08:17,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-12-13 17:08:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023192278] [2022-12-13 17:08:17,740 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 17:08:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 17:08:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:08:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=309, Unknown=20, NotChecked=36, Total=420 [2022-12-13 17:08:17,741 INFO L87 Difference]: Start difference. First operand 415 states and 490 transitions. Second operand has 20 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 17:08:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:25,296 INFO L93 Difference]: Finished difference Result 493 states and 577 transitions. [2022-12-13 17:08:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 17:08:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) Word has length 109 [2022-12-13 17:08:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:25,298 INFO L225 Difference]: With dead ends: 493 [2022-12-13 17:08:25,298 INFO L226 Difference]: Without dead ends: 344 [2022-12-13 17:08:25,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=286, Invalid=1419, Unknown=21, NotChecked=80, Total=1806 [2022-12-13 17:08:25,299 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 182 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 101 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:25,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 510 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1632 Invalid, 33 Unknown, 210 Unchecked, 3.3s Time] [2022-12-13 17:08:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-12-13 17:08:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 316. [2022-12-13 17:08:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 208 states have (on average 1.0865384615384615) internal successors, (226), 214 states have internal predecessors, (226), 61 states have call successors, (61), 45 states have call predecessors, (61), 46 states have return successors, (84), 56 states have call predecessors, (84), 60 states have call successors, (84) [2022-12-13 17:08:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 371 transitions. [2022-12-13 17:08:25,381 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 371 transitions. Word has length 109 [2022-12-13 17:08:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 371 transitions. [2022-12-13 17:08:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 17:08:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 371 transitions. [2022-12-13 17:08:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 17:08:25,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:25,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-12-13 17:08:25,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 17:08:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:08:25,584 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1291317768, now seen corresponding path program 1 times [2022-12-13 17:08:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:25,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743313330] [2022-12-13 17:08:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:25,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:08:25,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763729193] [2022-12-13 17:08:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:08:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:08:25,659 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:08:25,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f57b1db-915f-465d-ae62-d5f1dc1b6c25/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 17:08:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:26,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 217 conjunts are in the unsatisfiable core [2022-12-13 17:08:26,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:08:26,481 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 17:08:26,606 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:08:26,607 INFO L350 Elim1Store]: Elim1 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 17 treesize of output 21 [2022-12-13 17:08:26,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-12-13 17:08:26,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:08:26,788 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 30 [2022-12-13 17:08:27,150 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 17:08:27,579 INFO L321 Elim1Store]: treesize reduction 133, result has 30.0 percent of original size [2022-12-13 17:08:27,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 52 treesize of output 87 [2022-12-13 17:08:27,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2022-12-13 17:08:28,017 INFO L321 Elim1Store]: treesize reduction 54, result has 36.5 percent of original size [2022-12-13 17:08:28,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 45 [2022-12-13 17:08:28,318 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1950 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1950))) (exists ((v_ArrVal_1951 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1951) |c_#memory_int|))) is different from true [2022-12-13 17:08:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:08:28,478 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 36 [2022-12-13 17:08:28,500 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2022-12-13 17:08:28,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 17:08:28,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21