./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- 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 12:13:35,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:13:35,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:13:35,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:13:35,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:13:35,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:13:35,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:13:35,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:13:35,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:13:35,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:13:35,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:13:35,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:13:35,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:13:35,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:13:35,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:13:35,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:13:35,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:13:35,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:13:35,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:13:35,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:13:35,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:13:35,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:13:35,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:13:35,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:13:35,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:13:35,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:13:35,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:13:35,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:13:35,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:13:35,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:13:35,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:13:35,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:13:35,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:13:35,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:13:35,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:13:35,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:13:35,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:13:35,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:13:35,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:13:35,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:13:35,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:13:35,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 12:13:35,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:13:35,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:13:35,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:13:35,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:13:35,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:13:35,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:13:35,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:13:35,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:13:35,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:13:35,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:13:35,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:35,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:13:35,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:13:35,827 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:13:35,827 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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2022-12-13 12:13:35,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:13:36,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:13:36,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:13:36,030 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:13:36,030 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:13:36,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-12-13 12:13:38,646 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:13:38,969 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:13:38,970 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-12-13 12:13:38,989 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/data/9f057ce51/8712561b8cfa461e8a5e1a7735618771/FLAG625cd88f5 [2022-12-13 12:13:39,000 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/data/9f057ce51/8712561b8cfa461e8a5e1a7735618771 [2022-12-13 12:13:39,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:13:39,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:13:39,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:39,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:13:39,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:13:39,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:39" (1/1) ... [2022-12-13 12:13:39,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bf41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:39, skipping insertion in model container [2022-12-13 12:13:39,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:13:39" (1/1) ... [2022-12-13 12:13:39,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:13:39,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:13:39,338 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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-12-13 12:13:39,343 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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-12-13 12:13:39,856 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:39,860 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,860 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,862 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,864 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:39,872 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,872 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:39,873 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,874 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,875 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:39,935 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:39,935 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:39,936 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:39,940 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 12:13:39,941 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 12:13:39,942 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 12:13:40,165 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 12:13:40,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 12:13:40,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 12:13:40,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 12:13:40,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 12:13:40,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 12:13:40,170 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 12:13:40,170 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 12:13:40,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 12:13:40,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 12:13:40,172 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 12:13:40,293 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 12:13:40,316 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,323 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,326 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 12:13:40,333 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:13:40,340 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,345 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,345 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,346 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,355 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:13:40,362 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,362 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,366 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,372 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,406 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 12:13:40,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:40,440 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:13:40,450 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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-12-13 12:13:40,450 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_b9aed3ef-1a98-48bf-a998-a699ebe3c051/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2022-12-13 12:13:40,509 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,510 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,511 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,511 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,511 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,512 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,513 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,517 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,517 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,517 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,518 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,519 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,534 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:40,535 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:40,535 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 12:13:40,537 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 12:13:40,538 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 12:13:40,538 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 12:13:40,551 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 12:13:40,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 12:13:40,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 12:13:40,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 12:13:40,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 12:13:40,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 12:13:40,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 12:13:40,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 12:13:40,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 12:13:40,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 12:13:40,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 12:13:40,568 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 12:13:40,578 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,582 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,583 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 12:13:40,587 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:13:40,591 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,593 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,594 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,594 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,599 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 12:13:40,603 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,603 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 12:13:40,606 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,610 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-13 12:13:40,622 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 12:13:40,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:13:40,748 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:13:40,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40 WrapperNode [2022-12-13 12:13:40,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:13:40,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:40,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:13:40,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:13:40,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,857 INFO L138 Inliner]: procedures = 691, calls = 2642, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 858 [2022-12-13 12:13:40,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:13:40,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:13:40,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:13:40,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:13:40,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,898 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:13:40,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:13:40,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:13:40,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:13:40,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (1/1) ... [2022-12-13 12:13:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:13:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:40,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:13:40,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:13:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 12:13:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:13:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 12:13:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 12:13:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 12:13:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-12-13 12:13:40,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-12-13 12:13:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 12:13:40,966 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 12:13:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:13:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:13:41,154 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:13:41,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:13:41,983 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:13:41,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:13:41,989 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 12:13:41,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:41 BoogieIcfgContainer [2022-12-13 12:13:41,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:13:41,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:13:41,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:13:41,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:13:41,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:13:39" (1/3) ... [2022-12-13 12:13:41,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2d3d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:41, skipping insertion in model container [2022-12-13 12:13:41,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:13:40" (2/3) ... [2022-12-13 12:13:41,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a2d3d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:13:41, skipping insertion in model container [2022-12-13 12:13:41,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:13:41" (3/3) ... [2022-12-13 12:13:41,997 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2022-12-13 12:13:42,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:13:42,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:13:42,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:13:42,051 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;@6071b009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:13:42,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:13:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-12-13 12:13:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:13:42,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:42,063 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1617698357, now seen corresponding path program 1 times [2022-12-13 12:13:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104006218] [2022-12-13 12:13:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:13:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:13:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:13:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:13:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:13:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:13:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:13:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 12:13:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:42,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104006218] [2022-12-13 12:13:42,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104006218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:42,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:42,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:13:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413555798] [2022-12-13 12:13:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:13:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:13:42,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:13:42,559 INFO L87 Difference]: Start difference. First operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:13:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:42,900 INFO L93 Difference]: Finished difference Result 336 states and 480 transitions. [2022-12-13 12:13:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:13:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2022-12-13 12:13:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:42,909 INFO L225 Difference]: With dead ends: 336 [2022-12-13 12:13:42,909 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 12:13:42,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 12:13:42,917 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 115 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:42,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 115 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:13:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 12:13:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-12-13 12:13:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 104 states have internal predecessors, (123), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-13 12:13:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2022-12-13 12:13:42,980 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 97 [2022-12-13 12:13:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:42,981 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2022-12-13 12:13:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:13:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2022-12-13 12:13:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 12:13:42,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:42,985 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:13:42,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -369216981, now seen corresponding path program 1 times [2022-12-13 12:13:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:42,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224548773] [2022-12-13 12:13:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:13:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 12:13:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 12:13:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:13:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:13:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:13:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:13:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-12-13 12:13:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224548773] [2022-12-13 12:13:43,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224548773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422785805] [2022-12-13 12:13:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:43,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:43,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:13:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:43,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:13:43,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 12:13:44,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:13:44,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422785805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:44,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:13:44,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-13 12:13:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528937597] [2022-12-13 12:13:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:13:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:44,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:13:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:13:44,116 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:13:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:44,316 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2022-12-13 12:13:44,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:13:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 97 [2022-12-13 12:13:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:44,320 INFO L225 Difference]: With dead ends: 316 [2022-12-13 12:13:44,320 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 12:13:44,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:13:44,322 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 236 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:44,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 668 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:13:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 12:13:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-12-13 12:13:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 107 states have internal predecessors, (125), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-12-13 12:13:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2022-12-13 12:13:44,338 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 97 [2022-12-13 12:13:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:44,339 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2022-12-13 12:13:44,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 12:13:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2022-12-13 12:13:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 12:13:44,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:44,341 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:44,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:13:44,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:44,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1220439414, now seen corresponding path program 1 times [2022-12-13 12:13:44,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267240648] [2022-12-13 12:13:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:13:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:13:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:13:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:13:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:13:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-12-13 12:13:45,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:45,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267240648] [2022-12-13 12:13:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267240648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:45,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:45,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:13:45,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298038914] [2022-12-13 12:13:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:13:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:13:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:13:45,066 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 12:13:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:45,572 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2022-12-13 12:13:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:13:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 103 [2022-12-13 12:13:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:45,574 INFO L225 Difference]: With dead ends: 294 [2022-12-13 12:13:45,574 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 12:13:45,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:13:45,575 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 165 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:45,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 261 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:13:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 12:13:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-12-13 12:13:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 104 states have internal predecessors, (122), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-13 12:13:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2022-12-13 12:13:45,586 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 103 [2022-12-13 12:13:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:45,586 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2022-12-13 12:13:45,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 12:13:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2022-12-13 12:13:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 12:13:45,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:45,587 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:13:45,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 139910209, now seen corresponding path program 1 times [2022-12-13 12:13:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:45,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052832077] [2022-12-13 12:13:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:45,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:13:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:13:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 12:13:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:13:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:13:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:45,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052832077] [2022-12-13 12:13:45,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052832077] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:45,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656744920] [2022-12-13 12:13:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:45,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:45,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:45,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:45,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:13:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:46,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:13:46,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 12:13:46,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:46,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656744920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:13:46,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:13:46,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 12:13:46,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055360287] [2022-12-13 12:13:46,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:13:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:13:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:13:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:13:46,607 INFO L87 Difference]: Start difference. First operand 165 states and 217 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-12-13 12:13:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:47,016 INFO L93 Difference]: Finished difference Result 296 states and 394 transitions. [2022-12-13 12:13:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:13:47,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 109 [2022-12-13 12:13:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:47,018 INFO L225 Difference]: With dead ends: 296 [2022-12-13 12:13:47,018 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 12:13:47,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:13:47,019 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 258 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:47,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 159 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:13:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 12:13:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-12-13 12:13:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.180952380952381) internal successors, (124), 107 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-12-13 12:13:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2022-12-13 12:13:47,037 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 109 [2022-12-13 12:13:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:47,037 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2022-12-13 12:13:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-12-13 12:13:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2022-12-13 12:13:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 12:13:47,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:47,039 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:47,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:13:47,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 12:13:47,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2020813690, now seen corresponding path program 1 times [2022-12-13 12:13:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:47,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766754659] [2022-12-13 12:13:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:47,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:13:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:13:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:13:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:13:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:13:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:47,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766754659] [2022-12-13 12:13:47,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766754659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:47,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537393908] [2022-12-13 12:13:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:47,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:47,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:47,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:47,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:13:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:48,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:13:48,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 12:13:48,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:48,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537393908] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:48,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:13:48,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 21 [2022-12-13 12:13:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925422261] [2022-12-13 12:13:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:13:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:13:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:13:48,577 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:13:48,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:48,815 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2022-12-13 12:13:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:13:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 111 [2022-12-13 12:13:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:48,816 INFO L225 Difference]: With dead ends: 291 [2022-12-13 12:13:48,816 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 12:13:48,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-13 12:13:48,817 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 227 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:48,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 935 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 12:13:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 12:13:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-12-13 12:13:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-13 12:13:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 216 transitions. [2022-12-13 12:13:48,827 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 216 transitions. Word has length 111 [2022-12-13 12:13:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 216 transitions. [2022-12-13 12:13:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:13:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 216 transitions. [2022-12-13 12:13:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 12:13:48,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:48,829 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:48,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:13:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:49,031 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1770709749, now seen corresponding path program 1 times [2022-12-13 12:13:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:49,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421263250] [2022-12-13 12:13:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:13:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:13:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:13:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:13:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:13:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421263250] [2022-12-13 12:13:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421263250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611158886] [2022-12-13 12:13:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:50,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:50,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:13:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:50,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 12:13:50,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:51,450 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 26 treesize of output 14 [2022-12-13 12:13:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 12:13:51,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:51,555 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 26 treesize of output 14 [2022-12-13 12:13:51,591 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 12:13:51,592 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 29 treesize of output 24 [2022-12-13 12:13:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:13:51,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611158886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:13:51,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:13:51,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 17 [2022-12-13 12:13:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636041216] [2022-12-13 12:13:51,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:13:51,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:13:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:13:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:13:51,612 INFO L87 Difference]: Start difference. First operand 165 states and 216 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-12-13 12:13:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:54,213 INFO L93 Difference]: Finished difference Result 400 states and 534 transitions. [2022-12-13 12:13:54,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:13:54,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 113 [2022-12-13 12:13:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:54,216 INFO L225 Difference]: With dead ends: 400 [2022-12-13 12:13:54,216 INFO L226 Difference]: Without dead ends: 280 [2022-12-13 12:13:54,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 237 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 12:13:54,217 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 284 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 421 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 12:13:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-12-13 12:13:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 270. [2022-12-13 12:13:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 170 states have (on average 1.1588235294117648) internal successors, (197), 171 states have internal predecessors, (197), 77 states have call successors, (77), 22 states have call predecessors, (77), 22 states have return successors, (80), 76 states have call predecessors, (80), 75 states have call successors, (80) [2022-12-13 12:13:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 354 transitions. [2022-12-13 12:13:54,241 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 354 transitions. Word has length 113 [2022-12-13 12:13:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:54,241 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 354 transitions. [2022-12-13 12:13:54,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-12-13 12:13:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 354 transitions. [2022-12-13 12:13:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 12:13:54,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:54,243 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:54,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:13:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:54,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1925736603, now seen corresponding path program 1 times [2022-12-13 12:13:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:54,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153662271] [2022-12-13 12:13:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:13:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:13:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:13:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:13:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:13:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 12:13:55,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153662271] [2022-12-13 12:13:55,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153662271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:13:55,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344627633] [2022-12-13 12:13:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:55,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:13:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:13:55,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:13:55,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:13:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:55,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 12:13:55,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:13:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 12:13:55,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:13:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 12:13:55,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344627633] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:13:55,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:13:55,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 11] total 20 [2022-12-13 12:13:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238176180] [2022-12-13 12:13:55,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:13:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:13:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:13:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:13:55,818 INFO L87 Difference]: Start difference. First operand 270 states and 354 transitions. Second operand has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-12-13 12:13:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:56,969 INFO L93 Difference]: Finished difference Result 461 states and 611 transitions. [2022-12-13 12:13:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:13:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 121 [2022-12-13 12:13:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:56,970 INFO L225 Difference]: With dead ends: 461 [2022-12-13 12:13:56,970 INFO L226 Difference]: Without dead ends: 287 [2022-12-13 12:13:56,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2022-12-13 12:13:56,972 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 150 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:56,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 991 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 12:13:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-13 12:13:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 275. [2022-12-13 12:13:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 174 states have (on average 1.1551724137931034) internal successors, (201), 176 states have internal predecessors, (201), 77 states have call successors, (77), 22 states have call predecessors, (77), 23 states have return successors, (84), 76 states have call predecessors, (84), 75 states have call successors, (84) [2022-12-13 12:13:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 362 transitions. [2022-12-13 12:13:56,992 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 362 transitions. Word has length 121 [2022-12-13 12:13:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:56,992 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 362 transitions. [2022-12-13 12:13:56,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-12-13 12:13:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 362 transitions. [2022-12-13 12:13:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 12:13:56,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:56,993 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:57,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:13:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:13:57,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:57,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash -508813440, now seen corresponding path program 1 times [2022-12-13 12:13:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:57,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174571994] [2022-12-13 12:13:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:13:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:13:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:13:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:13:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:13:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 12:13:57,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:57,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174571994] [2022-12-13 12:13:57,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174571994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:57,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:57,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:13:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75232202] [2022-12-13 12:13:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:57,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:13:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:13:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:13:57,853 INFO L87 Difference]: Start difference. First operand 275 states and 362 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:13:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:58,483 INFO L93 Difference]: Finished difference Result 435 states and 569 transitions. [2022-12-13 12:13:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:13:58,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2022-12-13 12:13:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:58,485 INFO L225 Difference]: With dead ends: 435 [2022-12-13 12:13:58,485 INFO L226 Difference]: Without dead ends: 275 [2022-12-13 12:13:58,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:13:58,486 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 127 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:58,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 500 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:13:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-12-13 12:13:58,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2022-12-13 12:13:58,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 174 states have (on average 1.1551724137931034) internal successors, (201), 176 states have internal predecessors, (201), 77 states have call successors, (77), 22 states have call predecessors, (77), 23 states have return successors, (83), 76 states have call predecessors, (83), 75 states have call successors, (83) [2022-12-13 12:13:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 361 transitions. [2022-12-13 12:13:58,504 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 361 transitions. Word has length 123 [2022-12-13 12:13:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:58,504 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 361 transitions. [2022-12-13 12:13:58,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 12:13:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 361 transitions. [2022-12-13 12:13:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 12:13:58,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:58,506 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:13:58,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1642823079, now seen corresponding path program 1 times [2022-12-13 12:13:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:58,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257621099] [2022-12-13 12:13:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:13:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:13:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:13:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:13:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:13:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:13:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:13:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:13:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:13:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:13:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:13:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:13:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:13:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:13:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:13:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:13:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-13 12:13:59,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:13:59,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257621099] [2022-12-13 12:13:59,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257621099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:13:59,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:13:59,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:13:59,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712399664] [2022-12-13 12:13:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:13:59,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:13:59,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:13:59,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:13:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:13:59,093 INFO L87 Difference]: Start difference. First operand 275 states and 361 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:13:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:13:59,614 INFO L93 Difference]: Finished difference Result 299 states and 394 transitions. [2022-12-13 12:13:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:13:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2022-12-13 12:13:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:13:59,617 INFO L225 Difference]: With dead ends: 299 [2022-12-13 12:13:59,617 INFO L226 Difference]: Without dead ends: 297 [2022-12-13 12:13:59,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:13:59,618 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 143 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:13:59,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 448 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:13:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-13 12:13:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 294. [2022-12-13 12:13:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 190 states have internal predecessors, (213), 80 states have call successors, (80), 24 states have call predecessors, (80), 27 states have return successors, (95), 79 states have call predecessors, (95), 78 states have call successors, (95) [2022-12-13 12:13:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2022-12-13 12:13:59,641 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 125 [2022-12-13 12:13:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:13:59,641 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2022-12-13 12:13:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:13:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2022-12-13 12:13:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 12:13:59,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:13:59,643 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:13:59,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:13:59,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:13:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:13:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 14294821, now seen corresponding path program 1 times [2022-12-13 12:13:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:13:59,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353098760] [2022-12-13 12:13:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:13:59,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:13:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:14:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:14:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:14:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:14:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 12:14:00,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:00,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353098760] [2022-12-13 12:14:00,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353098760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:00,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936482890] [2022-12-13 12:14:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:00,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:00,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:00,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:00,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:14:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:00,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:14:00,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 12:14:00,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936482890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:00,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:00,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-12-13 12:14:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988408285] [2022-12-13 12:14:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:00,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:14:00,556 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 12:14:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:00,917 INFO L93 Difference]: Finished difference Result 483 states and 644 transitions. [2022-12-13 12:14:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:14:00,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 125 [2022-12-13 12:14:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:00,919 INFO L225 Difference]: With dead ends: 483 [2022-12-13 12:14:00,920 INFO L226 Difference]: Without dead ends: 294 [2022-12-13 12:14:00,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:00,921 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 19 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:00,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 754 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:14:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-13 12:14:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-12-13 12:14:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 186 states have (on average 1.1397849462365592) internal successors, (212), 190 states have internal predecessors, (212), 80 states have call successors, (80), 24 states have call predecessors, (80), 27 states have return successors, (95), 79 states have call predecessors, (95), 78 states have call successors, (95) [2022-12-13 12:14:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 387 transitions. [2022-12-13 12:14:00,940 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 387 transitions. Word has length 125 [2022-12-13 12:14:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:00,940 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 387 transitions. [2022-12-13 12:14:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 12:14:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 387 transitions. [2022-12-13 12:14:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 12:14:00,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:00,941 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:00,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:14:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:14:01,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1113949143, now seen corresponding path program 1 times [2022-12-13 12:14:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220881849] [2022-12-13 12:14:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:14:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:14:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:14:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:14:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-13 12:14:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:02,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220881849] [2022-12-13 12:14:02,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220881849] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:02,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827983947] [2022-12-13 12:14:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:02,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:02,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:02,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:02,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:14:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:02,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 12:14:02,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:02,703 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 13 treesize of output 9 [2022-12-13 12:14:02,705 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 13 treesize of output 9 [2022-12-13 12:14:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 12:14:03,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827983947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:03,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-12-13 12:14:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939381626] [2022-12-13 12:14:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:14:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:14:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:14:03,019 INFO L87 Difference]: Start difference. First operand 294 states and 387 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:14:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:04,467 INFO L93 Difference]: Finished difference Result 751 states and 996 transitions. [2022-12-13 12:14:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:14:04,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 125 [2022-12-13 12:14:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:04,471 INFO L225 Difference]: With dead ends: 751 [2022-12-13 12:14:04,471 INFO L226 Difference]: Without dead ends: 562 [2022-12-13 12:14:04,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-12-13 12:14:04,473 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 196 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:04,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1565 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 12:14:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-12-13 12:14:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 556. [2022-12-13 12:14:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 354 states have (on average 1.1440677966101696) internal successors, (405), 364 states have internal predecessors, (405), 150 states have call successors, (150), 44 states have call predecessors, (150), 51 states have return successors, (186), 147 states have call predecessors, (186), 146 states have call successors, (186) [2022-12-13 12:14:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 741 transitions. [2022-12-13 12:14:04,534 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 741 transitions. Word has length 125 [2022-12-13 12:14:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:04,534 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 741 transitions. [2022-12-13 12:14:04,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-13 12:14:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 741 transitions. [2022-12-13 12:14:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 12:14:04,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:04,535 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:04,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:14:04,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:04,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash -434676889, now seen corresponding path program 1 times [2022-12-13 12:14:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:04,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955528723] [2022-12-13 12:14:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:14:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:14:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:14:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:14:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 12:14:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955528723] [2022-12-13 12:14:04,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955528723] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385532170] [2022-12-13 12:14:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:04,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:04,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:04,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:14:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:05,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:14:05,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 12:14:05,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:05,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385532170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:05,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:05,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 12:14:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360142627] [2022-12-13 12:14:05,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:05,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:14:05,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:05,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:14:05,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:05,349 INFO L87 Difference]: Start difference. First operand 556 states and 741 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 12:14:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:05,404 INFO L93 Difference]: Finished difference Result 808 states and 1067 transitions. [2022-12-13 12:14:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 125 [2022-12-13 12:14:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:05,406 INFO L225 Difference]: With dead ends: 808 [2022-12-13 12:14:05,406 INFO L226 Difference]: Without dead ends: 405 [2022-12-13 12:14:05,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:05,407 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 6 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:05,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 637 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:14:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-12-13 12:14:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 402. [2022-12-13 12:14:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 257 states have (on average 1.1361867704280155) internal successors, (292), 263 states have internal predecessors, (292), 107 states have call successors, (107), 33 states have call predecessors, (107), 37 states have return successors, (124), 105 states have call predecessors, (124), 104 states have call successors, (124) [2022-12-13 12:14:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 523 transitions. [2022-12-13 12:14:05,432 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 523 transitions. Word has length 125 [2022-12-13 12:14:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:05,432 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 523 transitions. [2022-12-13 12:14:05,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 12:14:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 523 transitions. [2022-12-13 12:14:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 12:14:05,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:05,433 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:05,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 12:14:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 12:14:05,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash -473794321, now seen corresponding path program 1 times [2022-12-13 12:14:05,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:05,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430689912] [2022-12-13 12:14:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:05,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:14:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:14:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:14:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:14:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:14:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:14:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:14:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:14:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 12:14:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430689912] [2022-12-13 12:14:06,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430689912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:06,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:06,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:14:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957872209] [2022-12-13 12:14:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:14:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:14:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:06,109 INFO L87 Difference]: Start difference. First operand 402 states and 523 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:14:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:06,531 INFO L93 Difference]: Finished difference Result 859 states and 1150 transitions. [2022-12-13 12:14:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:14:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2022-12-13 12:14:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:06,535 INFO L225 Difference]: With dead ends: 859 [2022-12-13 12:14:06,535 INFO L226 Difference]: Without dead ends: 477 [2022-12-13 12:14:06,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:06,537 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 191 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:06,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 209 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:14:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-12-13 12:14:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 417. [2022-12-13 12:14:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 272 states have (on average 1.150735294117647) internal successors, (313), 278 states have internal predecessors, (313), 107 states have call successors, (107), 33 states have call predecessors, (107), 37 states have return successors, (124), 105 states have call predecessors, (124), 104 states have call successors, (124) [2022-12-13 12:14:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 544 transitions. [2022-12-13 12:14:06,584 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 544 transitions. Word has length 129 [2022-12-13 12:14:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:06,584 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 544 transitions. [2022-12-13 12:14:06,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:14:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 544 transitions. [2022-12-13 12:14:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 12:14:06,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:06,586 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:06,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:14:06,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:06,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash -215628883, now seen corresponding path program 1 times [2022-12-13 12:14:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:06,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885532390] [2022-12-13 12:14:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:14:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:14:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:14:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 12:14:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 12:14:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:14:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 12:14:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 12:14:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-13 12:14:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885532390] [2022-12-13 12:14:07,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885532390] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:07,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345337464] [2022-12-13 12:14:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:07,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:07,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:14:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:07,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 12:14:07,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:07,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 12:14:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-13 12:14:08,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:08,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345337464] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:08,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:08,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-12-13 12:14:08,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822825468] [2022-12-13 12:14:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:08,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:14:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:14:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:14:08,128 INFO L87 Difference]: Start difference. First operand 417 states and 544 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-13 12:14:10,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:14:12,673 WARN L539 Checker$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 12:14:14,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:14:16,793 WARN L539 Checker$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 12:14:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:16,824 INFO L93 Difference]: Finished difference Result 848 states and 1101 transitions. [2022-12-13 12:14:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:14:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 129 [2022-12-13 12:14:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:16,826 INFO L225 Difference]: With dead ends: 848 [2022-12-13 12:14:16,826 INFO L226 Difference]: Without dead ends: 447 [2022-12-13 12:14:16,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:14:16,828 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 102 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:16,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1063 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 261 Invalid, 4 Unknown, 0 Unchecked, 8.5s Time] [2022-12-13 12:14:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-12-13 12:14:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 346. [2022-12-13 12:14:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 233 states have (on average 1.1545064377682404) internal successors, (269), 238 states have internal predecessors, (269), 81 states have call successors, (81), 28 states have call predecessors, (81), 31 states have return successors, (95), 79 states have call predecessors, (95), 79 states have call successors, (95) [2022-12-13 12:14:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 445 transitions. [2022-12-13 12:14:16,850 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 445 transitions. Word has length 129 [2022-12-13 12:14:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:16,850 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 445 transitions. [2022-12-13 12:14:16,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-13 12:14:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 445 transitions. [2022-12-13 12:14:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-13 12:14:16,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:16,851 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:16,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:14:17,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 12:14:17,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1702265267, now seen corresponding path program 2 times [2022-12-13 12:14:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:17,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145324491] [2022-12-13 12:14:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:14:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 12:14:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:14:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:14:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:14:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:14:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 12:14:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:14:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:14:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:14:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 12:14:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145324491] [2022-12-13 12:14:17,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145324491] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:17,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278088998] [2022-12-13 12:14:17,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:14:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:17,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:17,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:14:18,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:14:18,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:18,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 12:14:18,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 12:14:18,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:18,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278088998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:18,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:18,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-12-13 12:14:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60700185] [2022-12-13 12:14:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:14:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:14:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:14:18,200 INFO L87 Difference]: Start difference. First operand 346 states and 445 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 12:14:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:18,312 INFO L93 Difference]: Finished difference Result 661 states and 857 transitions. [2022-12-13 12:14:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:14:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-12-13 12:14:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:18,313 INFO L225 Difference]: With dead ends: 661 [2022-12-13 12:14:18,313 INFO L226 Difference]: Without dead ends: 356 [2022-12-13 12:14:18,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:14:18,315 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 13 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1578 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:14:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-12-13 12:14:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 346. [2022-12-13 12:14:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 233 states have (on average 1.150214592274678) internal successors, (268), 238 states have internal predecessors, (268), 81 states have call successors, (81), 28 states have call predecessors, (81), 31 states have return successors, (95), 79 states have call predecessors, (95), 79 states have call successors, (95) [2022-12-13 12:14:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 444 transitions. [2022-12-13 12:14:18,336 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 444 transitions. Word has length 133 [2022-12-13 12:14:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:18,337 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 444 transitions. [2022-12-13 12:14:18,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 12:14:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 444 transitions. [2022-12-13 12:14:18,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 12:14:18,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:18,337 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:18,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 12:14:18,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:18,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1020341176, now seen corresponding path program 1 times [2022-12-13 12:14:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:18,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215573208] [2022-12-13 12:14:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:14:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:14:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:14:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:14:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:14:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-13 12:14:18,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215573208] [2022-12-13 12:14:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215573208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958413688] [2022-12-13 12:14:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:18,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:18,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:18,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:18,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:14:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:14:19,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 12:14:19,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:19,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958413688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:19,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:19,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 12:14:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100000786] [2022-12-13 12:14:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:19,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:14:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:14:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:19,101 INFO L87 Difference]: Start difference. First operand 346 states and 444 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 12:14:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:19,133 INFO L93 Difference]: Finished difference Result 671 states and 873 transitions. [2022-12-13 12:14:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2022-12-13 12:14:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:19,135 INFO L225 Difference]: With dead ends: 671 [2022-12-13 12:14:19,135 INFO L226 Difference]: Without dead ends: 357 [2022-12-13 12:14:19,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:19,136 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 9 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:19,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 635 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:14:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-12-13 12:14:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 345. [2022-12-13 12:14:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 232 states have (on average 1.1379310344827587) internal successors, (264), 237 states have internal predecessors, (264), 81 states have call successors, (81), 28 states have call predecessors, (81), 31 states have return successors, (95), 79 states have call predecessors, (95), 79 states have call successors, (95) [2022-12-13 12:14:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 440 transitions. [2022-12-13 12:14:19,157 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 440 transitions. Word has length 135 [2022-12-13 12:14:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:19,158 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 440 transitions. [2022-12-13 12:14:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 12:14:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 440 transitions. [2022-12-13 12:14:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 12:14:19,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:19,158 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:19,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 12:14:19,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:19,360 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash -758714116, now seen corresponding path program 1 times [2022-12-13 12:14:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:19,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385253100] [2022-12-13 12:14:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:14:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:14:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:14:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:14:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:14:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 12:14:19,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:19,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385253100] [2022-12-13 12:14:19,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385253100] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:19,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492045443] [2022-12-13 12:14:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:19,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:19,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:19,591 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:19,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 12:14:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:14:19,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 12:14:19,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:14:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492045443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:19,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:14:19,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-13 12:14:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588611923] [2022-12-13 12:14:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:14:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:14:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:19,874 INFO L87 Difference]: Start difference. First operand 345 states and 440 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 12:14:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:19,904 INFO L93 Difference]: Finished difference Result 695 states and 902 transitions. [2022-12-13 12:14:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:19,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2022-12-13 12:14:19,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:19,906 INFO L225 Difference]: With dead ends: 695 [2022-12-13 12:14:19,906 INFO L226 Difference]: Without dead ends: 379 [2022-12-13 12:14:19,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:19,907 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 34 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 635 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 12:14:19,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 635 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:14:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-13 12:14:19,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 345. [2022-12-13 12:14:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 232 states have (on average 1.125) internal successors, (261), 237 states have internal predecessors, (261), 81 states have call successors, (81), 28 states have call predecessors, (81), 31 states have return successors, (95), 79 states have call predecessors, (95), 79 states have call successors, (95) [2022-12-13 12:14:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 437 transitions. [2022-12-13 12:14:19,928 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 437 transitions. Word has length 135 [2022-12-13 12:14:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:19,928 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 437 transitions. [2022-12-13 12:14:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 12:14:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 437 transitions. [2022-12-13 12:14:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 12:14:19,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:19,929 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:19,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 12:14:20,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 12:14:20,130 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1502859134, now seen corresponding path program 1 times [2022-12-13 12:14:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624564290] [2022-12-13 12:14:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:14:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:14:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:14:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:14:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:14:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 12:14:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 12:14:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 12:14:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624564290] [2022-12-13 12:14:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624564290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941728180] [2022-12-13 12:14:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:21,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:21,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:21,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 12:14:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:22,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 12:14:22,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:22,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:14:30,557 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 12:14:30,557 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 20 treesize of output 23 [2022-12-13 12:14:30,560 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 11 treesize of output 7 [2022-12-13 12:14:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:14:31,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:32,466 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 30 treesize of output 24 [2022-12-13 12:14:38,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941728180] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:38,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:14:38,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 38 [2022-12-13 12:14:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939136066] [2022-12-13 12:14:38,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 12:14:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 12:14:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2523, Unknown=4, NotChecked=0, Total=2756 [2022-12-13 12:14:38,722 INFO L87 Difference]: Start difference. First operand 345 states and 437 transitions. Second operand has 38 states, 36 states have (on average 3.861111111111111) internal successors, (139), 33 states have internal predecessors, (139), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-12-13 12:14:47,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:14:49,669 WARN L539 Checker$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 12:14:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:14:51,646 INFO L93 Difference]: Finished difference Result 839 states and 1072 transitions. [2022-12-13 12:14:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 12:14:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.861111111111111) internal successors, (139), 33 states have internal predecessors, (139), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) Word has length 135 [2022-12-13 12:14:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:14:51,649 INFO L225 Difference]: With dead ends: 839 [2022-12-13 12:14:51,649 INFO L226 Difference]: Without dead ends: 571 [2022-12-13 12:14:51,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 199 SyntacticMatches, 16 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=591, Invalid=5725, Unknown=4, NotChecked=0, Total=6320 [2022-12-13 12:14:51,651 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 952 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 5969 mSolverCounterSat, 714 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 6685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 5969 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:14:51,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 505 Invalid, 6685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 5969 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-12-13 12:14:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-13 12:14:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 460. [2022-12-13 12:14:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 311 states have (on average 1.1286173633440515) internal successors, (351), 317 states have internal predecessors, (351), 107 states have call successors, (107), 37 states have call predecessors, (107), 41 states have return successors, (116), 105 states have call predecessors, (116), 103 states have call successors, (116) [2022-12-13 12:14:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 574 transitions. [2022-12-13 12:14:51,682 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 574 transitions. Word has length 135 [2022-12-13 12:14:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:14:51,682 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 574 transitions. [2022-12-13 12:14:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.861111111111111) internal successors, (139), 33 states have internal predecessors, (139), 17 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-12-13 12:14:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 574 transitions. [2022-12-13 12:14:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 12:14:51,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:14:51,684 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:51,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 12:14:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 12:14:51,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:14:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash -380163708, now seen corresponding path program 1 times [2022-12-13 12:14:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:51,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804115611] [2022-12-13 12:14:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:14:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:14:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:14:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:14:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:14:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:14:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:14:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:14:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:14:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:14:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:14:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 12:14:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:14:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:14:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:14:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 12:14:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:52,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804115611] [2022-12-13 12:14:52,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804115611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:52,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610499225] [2022-12-13 12:14:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:52,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:52,473 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:52,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 12:14:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-13 12:14:52,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:52,845 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 13 treesize of output 9 [2022-12-13 12:14:52,848 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 13 treesize of output 9 [2022-12-13 12:14:53,518 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:14:53,519 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 19 treesize of output 25 [2022-12-13 12:14:53,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:14:53,529 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-13 12:14:53,529 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 21 treesize of output 20 [2022-12-13 12:14:53,532 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 11 treesize of output 7 [2022-12-13 12:14:53,536 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 10 treesize of output 6 [2022-12-13 12:14:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 61 proven. 50 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 12:14:55,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:56,689 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 30 treesize of output 24 [2022-12-13 12:14:56,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610499225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:56,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:14:56,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27] total 35 [2022-12-13 12:14:56,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585166195] [2022-12-13 12:14:56,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:56,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 12:14:56,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 12:14:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1890, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 12:14:56,874 INFO L87 Difference]: Start difference. First operand 460 states and 574 transitions. Second operand has 35 states, 33 states have (on average 4.393939393939394) internal successors, (145), 29 states have internal predecessors, (145), 12 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-12-13 12:15:05,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:15:05,555 INFO L93 Difference]: Finished difference Result 991 states and 1252 transitions. [2022-12-13 12:15:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 12:15:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.393939393939394) internal successors, (145), 29 states have internal predecessors, (145), 12 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 139 [2022-12-13 12:15:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:15:05,560 INFO L225 Difference]: With dead ends: 991 [2022-12-13 12:15:05,560 INFO L226 Difference]: Without dead ends: 604 [2022-12-13 12:15:05,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 200 SyntacticMatches, 17 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=949, Invalid=8363, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 12:15:05,564 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 546 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 6273 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 6549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 6273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:15:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 817 Invalid, 6549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 6273 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-13 12:15:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-12-13 12:15:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 578. [2022-12-13 12:15:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 391 states have (on average 1.1202046035805626) internal successors, (438), 400 states have internal predecessors, (438), 133 states have call successors, (133), 46 states have call predecessors, (133), 53 states have return successors, (149), 131 states have call predecessors, (149), 128 states have call successors, (149) [2022-12-13 12:15:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 720 transitions. [2022-12-13 12:15:05,622 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 720 transitions. Word has length 139 [2022-12-13 12:15:05,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:15:05,623 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 720 transitions. [2022-12-13 12:15:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.393939393939394) internal successors, (145), 29 states have internal predecessors, (145), 12 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-12-13 12:15:05,623 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 720 transitions. [2022-12-13 12:15:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 12:15:05,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:15:05,624 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:05,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 12:15:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:05,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:15:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -630863407, now seen corresponding path program 1 times [2022-12-13 12:15:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97934144] [2022-12-13 12:15:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:15:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:15:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:15:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:15:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:15:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:15:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:15:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:15:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:15:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:15:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:15:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:15:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:15:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:15:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:15:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 12:15:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97934144] [2022-12-13 12:15:07,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97934144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680572859] [2022-12-13 12:15:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:07,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:07,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 12:15:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:07,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-13 12:15:07,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:07,543 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 13 treesize of output 9 [2022-12-13 12:15:07,931 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:15:07,931 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 19 treesize of output 25 [2022-12-13 12:15:07,934 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 10 treesize of output 6 [2022-12-13 12:15:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 62 proven. 58 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 12:15:09,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:10,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680572859] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:10,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:15:10,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25] total 35 [2022-12-13 12:15:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375332592] [2022-12-13 12:15:10,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 12:15:10,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 12:15:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2071, Unknown=4, NotChecked=0, Total=2256 [2022-12-13 12:15:10,750 INFO L87 Difference]: Start difference. First operand 578 states and 720 transitions. Second operand has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 32 states have internal predecessors, (166), 12 states have call successors, (32), 6 states have call predecessors, (32), 8 states have return successors, (29), 10 states have call predecessors, (29), 11 states have call successors, (29) [2022-12-13 12:15:14,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:15:17,422 WARN L539 Checker$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 12:15:28,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:15:30,312 WARN L539 Checker$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 12:15:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:15:32,326 INFO L93 Difference]: Finished difference Result 1575 states and 1941 transitions. [2022-12-13 12:15:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-13 12:15:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 32 states have internal predecessors, (166), 12 states have call successors, (32), 6 states have call predecessors, (32), 8 states have return successors, (29), 10 states have call predecessors, (29), 11 states have call successors, (29) Word has length 141 [2022-12-13 12:15:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:15:32,329 INFO L225 Difference]: With dead ends: 1575 [2022-12-13 12:15:32,329 INFO L226 Difference]: Without dead ends: 1209 [2022-12-13 12:15:32,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 225 SyntacticMatches, 15 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4592 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1485, Invalid=13517, Unknown=4, NotChecked=0, Total=15006 [2022-12-13 12:15:32,332 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 821 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 7639 mSolverCounterSat, 442 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 8085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 7639 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:15:32,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 498 Invalid, 8085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 7639 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2022-12-13 12:15:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-12-13 12:15:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 850. [2022-12-13 12:15:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 601 states have (on average 1.1164725457570714) internal successors, (671), 619 states have internal predecessors, (671), 170 states have call successors, (170), 63 states have call predecessors, (170), 78 states have return successors, (207), 167 states have call predecessors, (207), 163 states have call successors, (207) [2022-12-13 12:15:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1048 transitions. [2022-12-13 12:15:32,412 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1048 transitions. Word has length 141 [2022-12-13 12:15:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:15:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1048 transitions. [2022-12-13 12:15:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 32 states have internal predecessors, (166), 12 states have call successors, (32), 6 states have call predecessors, (32), 8 states have return successors, (29), 10 states have call predecessors, (29), 11 states have call successors, (29) [2022-12-13 12:15:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1048 transitions. [2022-12-13 12:15:32,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 12:15:32,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:15:32,414 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:32,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 12:15:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:32,614 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:15:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1817590549, now seen corresponding path program 1 times [2022-12-13 12:15:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:32,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611998166] [2022-12-13 12:15:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:15:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:15:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:15:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:15:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:15:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:15:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:15:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:15:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:15:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:15:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:15:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:15:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:15:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:15:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:15:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 12:15:33,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611998166] [2022-12-13 12:15:33,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611998166] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194224920] [2022-12-13 12:15:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:33,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:33,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:33,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:33,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 12:15:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 12:15:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:34,259 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 12:15:34,434 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 12:15:34,435 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 12:15:34,442 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 12:15:34,755 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 12:15:34,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 12:15:35,000 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 12:15:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 38 proven. 71 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 12:15:36,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:37,053 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1367 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1367) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base|))) (let ((.cse0 (mod (select .cse1 (+ 16 |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset|)) 18446744073709551616))) (or (= .cse0 0) (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset|) 18446744073709551616))))))) is different from false [2022-12-13 12:15:37,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194224920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:37,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:15:37,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2022-12-13 12:15:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63051613] [2022-12-13 12:15:37,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:37,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 12:15:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 12:15:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1617, Unknown=18, NotChecked=82, Total=1892 [2022-12-13 12:15:37,073 INFO L87 Difference]: Start difference. First operand 850 states and 1048 transitions. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 31 states have internal predecessors, (163), 11 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-13 12:15:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:15:44,955 INFO L93 Difference]: Finished difference Result 2178 states and 2745 transitions. [2022-12-13 12:15:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 12:15:44,956 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 31 states have internal predecessors, (163), 11 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 141 [2022-12-13 12:15:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:15:44,960 INFO L225 Difference]: With dead ends: 2178 [2022-12-13 12:15:44,960 INFO L226 Difference]: Without dead ends: 1537 [2022-12-13 12:15:44,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 211 SyntacticMatches, 21 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1610 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=708, Invalid=4534, Unknown=18, NotChecked=142, Total=5402 [2022-12-13 12:15:44,963 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 657 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 5166 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 5716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 5166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:15:44,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 432 Invalid, 5716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 5166 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-12-13 12:15:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-12-13 12:15:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1291. [2022-12-13 12:15:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 907 states have (on average 1.0926130099228224) internal successors, (991), 930 states have internal predecessors, (991), 268 states have call successors, (268), 97 states have call predecessors, (268), 115 states have return successors, (318), 263 states have call predecessors, (318), 258 states have call successors, (318) [2022-12-13 12:15:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1577 transitions. [2022-12-13 12:15:45,112 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1577 transitions. Word has length 141 [2022-12-13 12:15:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:15:45,112 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1577 transitions. [2022-12-13 12:15:45,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 31 states have internal predecessors, (163), 11 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-13 12:15:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1577 transitions. [2022-12-13 12:15:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 12:15:45,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:15:45,114 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:45,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 12:15:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:45,314 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:15:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 42361941, now seen corresponding path program 1 times [2022-12-13 12:15:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290651606] [2022-12-13 12:15:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:15:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:15:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:15:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:15:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:15:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:15:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:15:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:15:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:15:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:15:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:15:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:15:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:15:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:15:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:15:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-13 12:15:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:45,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290651606] [2022-12-13 12:15:45,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290651606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:45,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:15:45,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:15:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073588861] [2022-12-13 12:15:45,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:15:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:15:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:15:45,776 INFO L87 Difference]: Start difference. First operand 1291 states and 1577 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:15:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:15:46,453 INFO L93 Difference]: Finished difference Result 1938 states and 2369 transitions. [2022-12-13 12:15:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:15:46,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 141 [2022-12-13 12:15:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:15:46,457 INFO L225 Difference]: With dead ends: 1938 [2022-12-13 12:15:46,457 INFO L226 Difference]: Without dead ends: 1286 [2022-12-13 12:15:46,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:15:46,458 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 147 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:15:46,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 209 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:15:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-12-13 12:15:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1276. [2022-12-13 12:15:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 893 states have (on average 1.0862262038073909) internal successors, (970), 915 states have internal predecessors, (970), 268 states have call successors, (268), 97 states have call predecessors, (268), 114 states have return successors, (317), 263 states have call predecessors, (317), 258 states have call successors, (317) [2022-12-13 12:15:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1555 transitions. [2022-12-13 12:15:46,590 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1555 transitions. Word has length 141 [2022-12-13 12:15:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:15:46,590 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1555 transitions. [2022-12-13 12:15:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:15:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1555 transitions. [2022-12-13 12:15:46,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 12:15:46,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:15:46,591 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:46,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:15:46,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:15:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -231322215, now seen corresponding path program 1 times [2022-12-13 12:15:46,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:46,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761970616] [2022-12-13 12:15:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:15:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:15:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:15:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:15:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:15:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:15:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:15:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:15:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:15:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:15:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:15:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:15:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:15:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:15:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:15:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 12:15:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761970616] [2022-12-13 12:15:50,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761970616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10548606] [2022-12-13 12:15:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:50,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:50,222 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:50,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 12:15:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:50,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-13 12:15:50,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:50,625 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 13 treesize of output 9 [2022-12-13 12:15:57,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:15:57,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:15:57,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:15:57,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:15:57,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-12-13 12:16:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 91 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 12:16:02,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:10,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10548606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:10,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:16:10,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 45 [2022-12-13 12:16:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388932242] [2022-12-13 12:16:10,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 12:16:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 12:16:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2951, Unknown=1, NotChecked=0, Total=3192 [2022-12-13 12:16:10,162 INFO L87 Difference]: Start difference. First operand 1276 states and 1555 transitions. Second operand has 45 states, 44 states have (on average 3.727272727272727) internal successors, (164), 40 states have internal predecessors, (164), 18 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-12-13 12:16:12,621 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 12:16:14,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:17,005 WARN L539 Checker$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 12:16:19,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:21,045 WARN L539 Checker$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 12:16:23,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:26,719 WARN L539 Checker$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 12:16:29,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:31,378 WARN L539 Checker$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 12:16:37,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:49,699 WARN L539 Checker$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 12:16:51,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:16:54,571 WARN L539 Checker$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 12:16:56,776 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 12:16:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:16:59,696 INFO L93 Difference]: Finished difference Result 2035 states and 2485 transitions. [2022-12-13 12:16:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 12:16:59,697 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.727272727272727) internal successors, (164), 40 states have internal predecessors, (164), 18 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) Word has length 141 [2022-12-13 12:16:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:16:59,701 INFO L225 Difference]: With dead ends: 2035 [2022-12-13 12:16:59,701 INFO L226 Difference]: Without dead ends: 1444 [2022-12-13 12:16:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 217 SyntacticMatches, 19 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4715 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=1411, Invalid=12868, Unknown=1, NotChecked=0, Total=14280 [2022-12-13 12:16:59,704 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 690 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 10121 mSolverCounterSat, 902 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 11037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 10121 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:16:59,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 763 Invalid, 11037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 10121 Invalid, 14 Unknown, 0 Unchecked, 41.8s Time] [2022-12-13 12:16:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-12-13 12:16:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1089. [2022-12-13 12:16:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 752 states have (on average 1.0877659574468086) internal successors, (818), 771 states have internal predecessors, (818), 235 states have call successors, (235), 86 states have call predecessors, (235), 101 states have return successors, (276), 231 states have call predecessors, (276), 226 states have call successors, (276) [2022-12-13 12:16:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1329 transitions. [2022-12-13 12:16:59,844 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1329 transitions. Word has length 141 [2022-12-13 12:16:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:16:59,844 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1329 transitions. [2022-12-13 12:16:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.727272727272727) internal successors, (164), 40 states have internal predecessors, (164), 18 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-12-13 12:16:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1329 transitions. [2022-12-13 12:16:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 12:16:59,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:16:59,845 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:59,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 12:17:00,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:17:00,047 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:17:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:00,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1490074470, now seen corresponding path program 1 times [2022-12-13 12:17:00,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:00,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45295929] [2022-12-13 12:17:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:17:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:17:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:17:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:17:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:17:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:17:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:17:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:17:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:17:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:17:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:17:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:17:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:17:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:17:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-12-13 12:17:00,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:00,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45295929] [2022-12-13 12:17:00,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45295929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:00,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:00,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 12:17:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508437259] [2022-12-13 12:17:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:17:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:17:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:17:00,646 INFO L87 Difference]: Start difference. First operand 1089 states and 1329 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:17:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:17:01,607 INFO L93 Difference]: Finished difference Result 1134 states and 1381 transitions. [2022-12-13 12:17:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:17:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 143 [2022-12-13 12:17:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:17:01,610 INFO L225 Difference]: With dead ends: 1134 [2022-12-13 12:17:01,610 INFO L226 Difference]: Without dead ends: 1132 [2022-12-13 12:17:01,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:17:01,611 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 154 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:17:01,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 564 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 12:17:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-12-13 12:17:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1117. [2022-12-13 12:17:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 770 states have (on average 1.0857142857142856) internal successors, (836), 790 states have internal predecessors, (836), 240 states have call successors, (240), 90 states have call predecessors, (240), 106 states have return successors, (283), 236 states have call predecessors, (283), 231 states have call successors, (283) [2022-12-13 12:17:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1359 transitions. [2022-12-13 12:17:01,757 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1359 transitions. Word has length 143 [2022-12-13 12:17:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:17:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1359 transitions. [2022-12-13 12:17:01,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-13 12:17:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1359 transitions. [2022-12-13 12:17:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 12:17:01,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:17:01,759 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:01,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:17:01,759 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:17:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1595812768, now seen corresponding path program 1 times [2022-12-13 12:17:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:01,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164044299] [2022-12-13 12:17:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:01,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:17:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:17:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:17:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:17:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:17:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:17:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:17:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:17:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:17:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:17:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:17:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:17:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:17:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:17:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 12:17:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:04,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164044299] [2022-12-13 12:17:04,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164044299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:04,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:04,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 12:17:04,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298727762] [2022-12-13 12:17:04,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:17:04,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:17:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:17:04,189 INFO L87 Difference]: Start difference. First operand 1117 states and 1359 transitions. Second operand has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 12:17:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:17:06,083 INFO L93 Difference]: Finished difference Result 1162 states and 1417 transitions. [2022-12-13 12:17:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:17:06,083 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) Word has length 143 [2022-12-13 12:17:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:17:06,086 INFO L225 Difference]: With dead ends: 1162 [2022-12-13 12:17:06,086 INFO L226 Difference]: Without dead ends: 1160 [2022-12-13 12:17:06,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 12:17:06,087 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 366 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:17:06,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 400 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 12:17:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-12-13 12:17:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1121. [2022-12-13 12:17:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 773 states have (on average 1.0853816300129366) internal successors, (839), 793 states have internal predecessors, (839), 240 states have call successors, (240), 91 states have call predecessors, (240), 107 states have return successors, (283), 236 states have call predecessors, (283), 231 states have call successors, (283) [2022-12-13 12:17:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1362 transitions. [2022-12-13 12:17:06,234 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1362 transitions. Word has length 143 [2022-12-13 12:17:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:17:06,234 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1362 transitions. [2022-12-13 12:17:06,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 12:17:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1362 transitions. [2022-12-13 12:17:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 12:17:06,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:17:06,236 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:17:06,236 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:17:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2138320089, now seen corresponding path program 1 times [2022-12-13 12:17:06,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:06,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295009833] [2022-12-13 12:17:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:17:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:17:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:17:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:17:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:17:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:17:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:17:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:17:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:17:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:17:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:17:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:17:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:17:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:17:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-13 12:17:07,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:07,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295009833] [2022-12-13 12:17:07,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295009833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:17:07,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:17:07,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 12:17:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028717565] [2022-12-13 12:17:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:17:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:17:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:17:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:17:07,575 INFO L87 Difference]: Start difference. First operand 1121 states and 1362 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-13 12:17:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:17:08,844 INFO L93 Difference]: Finished difference Result 1193 states and 1464 transitions. [2022-12-13 12:17:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:17:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 148 [2022-12-13 12:17:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:17:08,848 INFO L225 Difference]: With dead ends: 1193 [2022-12-13 12:17:08,848 INFO L226 Difference]: Without dead ends: 1191 [2022-12-13 12:17:08,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:17:08,849 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 177 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:17:08,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 634 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 12:17:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-12-13 12:17:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1129. [2022-12-13 12:17:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 779 states have (on average 1.0847240051347882) internal successors, (845), 799 states have internal predecessors, (845), 240 states have call successors, (240), 93 states have call predecessors, (240), 109 states have return successors, (283), 236 states have call predecessors, (283), 231 states have call successors, (283) [2022-12-13 12:17:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1368 transitions. [2022-12-13 12:17:09,022 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1368 transitions. Word has length 148 [2022-12-13 12:17:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:17:09,023 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1368 transitions. [2022-12-13 12:17:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-12-13 12:17:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1368 transitions. [2022-12-13 12:17:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 12:17:09,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:17:09,025 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:17:09,025 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:17:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash -555205923, now seen corresponding path program 1 times [2022-12-13 12:17:09,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:09,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842328693] [2022-12-13 12:17:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:17:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:17:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:17:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:17:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:17:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:17:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:17:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:17:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:17:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:17:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 12:17:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:17:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:17:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 12:17:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 12:17:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-13 12:17:11,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:11,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842328693] [2022-12-13 12:17:11,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842328693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:17:11,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819348673] [2022-12-13 12:17:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:17:11,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:17:11,437 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:17:11,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 12:17:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:11,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-13 12:17:11,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:17:11,827 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 13 treesize of output 9 [2022-12-13 12:17:11,885 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 11 treesize of output 7 [2022-12-13 12:17:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 12:17:20,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:17:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-12-13 12:17:21,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819348673] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:17:21,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:17:21,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 9] total 40 [2022-12-13 12:17:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597937673] [2022-12-13 12:17:21,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:17:21,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 12:17:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 12:17:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1423, Unknown=1, NotChecked=0, Total=1560 [2022-12-13 12:17:21,116 INFO L87 Difference]: Start difference. First operand 1129 states and 1368 transitions. Second operand has 40 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 36 states have internal predecessors, (179), 17 states have call successors, (51), 6 states have call predecessors, (51), 8 states have return successors, (47), 15 states have call predecessors, (47), 16 states have call successors, (47) [2022-12-13 12:17:28,393 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 12:17:30,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:17:32,622 WARN L539 Checker$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 12:17:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:17:35,118 INFO L93 Difference]: Finished difference Result 1721 states and 2092 transitions. [2022-12-13 12:17:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 12:17:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 36 states have internal predecessors, (179), 17 states have call successors, (51), 6 states have call predecessors, (51), 8 states have return successors, (47), 15 states have call predecessors, (47), 16 states have call successors, (47) Word has length 152 [2022-12-13 12:17:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:17:35,122 INFO L225 Difference]: With dead ends: 1721 [2022-12-13 12:17:35,122 INFO L226 Difference]: Without dead ends: 1226 [2022-12-13 12:17:35,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 319 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=479, Invalid=3942, Unknown=1, NotChecked=0, Total=4422 [2022-12-13 12:17:35,123 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 954 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 6133 mSolverCounterSat, 657 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 6793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 6133 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:17:35,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 560 Invalid, 6793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 6133 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-12-13 12:17:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-12-13 12:17:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 925. [2022-12-13 12:17:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 634 states have (on average 1.088328075709779) internal successors, (690), 650 states have internal predecessors, (690), 196 states have call successors, (196), 82 states have call predecessors, (196), 94 states have return successors, (225), 192 states have call predecessors, (225), 190 states have call successors, (225) [2022-12-13 12:17:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1111 transitions. [2022-12-13 12:17:35,276 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1111 transitions. Word has length 152 [2022-12-13 12:17:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:17:35,276 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1111 transitions. [2022-12-13 12:17:35,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 4.7105263157894735) internal successors, (179), 36 states have internal predecessors, (179), 17 states have call successors, (51), 6 states have call predecessors, (51), 8 states have return successors, (47), 15 states have call predecessors, (47), 16 states have call successors, (47) [2022-12-13 12:17:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1111 transitions. [2022-12-13 12:17:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 12:17:35,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:17:35,277 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:35,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 12:17:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 12:17:35,479 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:17:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1742348139, now seen corresponding path program 1 times [2022-12-13 12:17:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:35,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234197211] [2022-12-13 12:17:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:17:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:17:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:17:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:17:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:17:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:17:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:17:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:17:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:17:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:17:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:17:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:17:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:17:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:17:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:17:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:17:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-12-13 12:17:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:37,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234197211] [2022-12-13 12:17:37,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234197211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:17:37,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230041386] [2022-12-13 12:17:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:37,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:17:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:17:37,272 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:17:37,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 12:17:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:37,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-13 12:17:37,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:17:37,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:17:41,182 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:17:41,182 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 15 treesize of output 21 [2022-12-13 12:17:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:17:41,191 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 12:17:41,591 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-12-13 12:17:41,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 33 [2022-12-13 12:17:54,237 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 16 treesize of output 8 [2022-12-13 12:17:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 54 proven. 75 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 12:17:54,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:17:54,794 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1758 Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1758)) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#from~0#1.offset|) 18446744073709551616) 0)) (forall ((v_ArrVal_1760 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1760) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset|)) 0)))) is different from false [2022-12-13 12:17:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230041386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:17:54,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:17:54,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 32] total 43 [2022-12-13 12:17:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206783184] [2022-12-13 12:17:54,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:17:54,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 12:17:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 12:17:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2345, Unknown=2, NotChecked=98, Total=2652 [2022-12-13 12:17:54,813 INFO L87 Difference]: Start difference. First operand 925 states and 1111 transitions. Second operand has 43 states, 41 states have (on average 4.024390243902439) internal successors, (165), 35 states have internal predecessors, (165), 18 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (33), 19 states have call predecessors, (33), 17 states have call successors, (33) [2022-12-13 12:18:09,015 WARN L539 Checker$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 12:18:11,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:18:15,165 WARN L539 Checker$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 12:18:17,237 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 12:18:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:18:18,340 INFO L93 Difference]: Finished difference Result 1265 states and 1516 transitions. [2022-12-13 12:18:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 12:18:18,342 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.024390243902439) internal successors, (165), 35 states have internal predecessors, (165), 18 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (33), 19 states have call predecessors, (33), 17 states have call successors, (33) Word has length 154 [2022-12-13 12:18:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:18:18,348 INFO L225 Difference]: With dead ends: 1265 [2022-12-13 12:18:18,348 INFO L226 Difference]: Without dead ends: 1263 [2022-12-13 12:18:18,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 222 SyntacticMatches, 20 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3373 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=1079, Invalid=10265, Unknown=2, NotChecked=210, Total=11556 [2022-12-13 12:18:18,351 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 940 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 6858 mSolverCounterSat, 757 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 7619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 6858 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:18:18,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 618 Invalid, 7619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 6858 Invalid, 4 Unknown, 0 Unchecked, 18.1s Time] [2022-12-13 12:18:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-12-13 12:18:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1066. [2022-12-13 12:18:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 733 states have (on average 1.08731241473397) internal successors, (797), 751 states have internal predecessors, (797), 220 states have call successors, (220), 97 states have call predecessors, (220), 112 states have return successors, (257), 217 states have call predecessors, (257), 214 states have call successors, (257) [2022-12-13 12:18:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1274 transitions. [2022-12-13 12:18:18,541 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1274 transitions. Word has length 154 [2022-12-13 12:18:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:18:18,542 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1274 transitions. [2022-12-13 12:18:18,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.024390243902439) internal successors, (165), 35 states have internal predecessors, (165), 18 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (33), 19 states have call predecessors, (33), 17 states have call successors, (33) [2022-12-13 12:18:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1274 transitions. [2022-12-13 12:18:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 12:18:18,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:18:18,543 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:18,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 12:18:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:18,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:18:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash -554646606, now seen corresponding path program 1 times [2022-12-13 12:18:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926707401] [2022-12-13 12:18:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:18:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:18:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:18:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:18:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:18:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:18:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:18:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:18:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:18:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 12:18:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 12:18:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 12:18:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 12:18:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 12:18:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 12:18:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 12:18:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-12-13 12:18:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:19,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926707401] [2022-12-13 12:18:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926707401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:19,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:18:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168779048] [2022-12-13 12:18:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:18:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:18:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:18:19,220 INFO L87 Difference]: Start difference. First operand 1066 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 12:18:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:18:20,011 INFO L93 Difference]: Finished difference Result 1100 states and 1311 transitions. [2022-12-13 12:18:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:18:20,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2022-12-13 12:18:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:18:20,018 INFO L225 Difference]: With dead ends: 1100 [2022-12-13 12:18:20,018 INFO L226 Difference]: Without dead ends: 1098 [2022-12-13 12:18:20,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:18:20,019 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 132 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:18:20,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 448 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:18:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-12-13 12:18:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1094. [2022-12-13 12:18:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 751 states have (on average 1.085219707057257) internal successors, (815), 769 states have internal predecessors, (815), 224 states have call successors, (224), 103 states have call predecessors, (224), 118 states have return successors, (261), 221 states have call predecessors, (261), 218 states have call successors, (261) [2022-12-13 12:18:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1300 transitions. [2022-12-13 12:18:20,244 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1300 transitions. Word has length 157 [2022-12-13 12:18:20,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:18:20,245 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1300 transitions. [2022-12-13 12:18:20,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-12-13 12:18:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1300 transitions. [2022-12-13 12:18:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 12:18:20,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:18:20,247 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:20,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:18:20,247 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:18:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash -877695663, now seen corresponding path program 1 times [2022-12-13 12:18:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:20,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699567087] [2022-12-13 12:18:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:18:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:18:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:18:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:18:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:18:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:18:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:18:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:18:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:18:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:18:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:18:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:18:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:18:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:18:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:18:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-12-13 12:18:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699567087] [2022-12-13 12:18:20,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699567087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:20,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:18:20,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 12:18:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572425573] [2022-12-13 12:18:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:18:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:18:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:18:20,830 INFO L87 Difference]: Start difference. First operand 1094 states and 1300 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 12:18:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:18:21,736 INFO L93 Difference]: Finished difference Result 1106 states and 1311 transitions. [2022-12-13 12:18:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:18:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 165 [2022-12-13 12:18:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:18:21,740 INFO L225 Difference]: With dead ends: 1106 [2022-12-13 12:18:21,740 INFO L226 Difference]: Without dead ends: 1104 [2022-12-13 12:18:21,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:18:21,741 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 151 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:18:21,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 565 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 12:18:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-12-13 12:18:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1102. [2022-12-13 12:18:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 757 states have (on average 1.084544253632761) internal successors, (821), 775 states have internal predecessors, (821), 224 states have call successors, (224), 105 states have call predecessors, (224), 120 states have return successors, (261), 221 states have call predecessors, (261), 218 states have call successors, (261) [2022-12-13 12:18:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1306 transitions. [2022-12-13 12:18:21,922 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1306 transitions. Word has length 165 [2022-12-13 12:18:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:18:21,922 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1306 transitions. [2022-12-13 12:18:21,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 12:18:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1306 transitions. [2022-12-13 12:18:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 12:18:21,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:18:21,924 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 12:18:21,924 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:18:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -570461933, now seen corresponding path program 1 times [2022-12-13 12:18:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220242798] [2022-12-13 12:18:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:18:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:18:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:18:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:18:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:18:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:18:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:18:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:18:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:18:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:18:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:18:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:18:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:18:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:18:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:18:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-13 12:18:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:24,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220242798] [2022-12-13 12:18:24,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220242798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:24,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399444347] [2022-12-13 12:18:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:24,336 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:24,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 12:18:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:24,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 105 conjunts are in the unsatisfiable core [2022-12-13 12:18:24,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:24,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:18:25,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:18:25,762 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-13 12:18:25,762 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 1 case distinctions, treesize of input 22 treesize of output 25 [2022-12-13 12:18:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 12:18:28,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:18:28,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399444347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:18:28,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:18:28,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [24] total 55 [2022-12-13 12:18:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490838728] [2022-12-13 12:18:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:18:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 12:18:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:18:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 12:18:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2805, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 12:18:28,207 INFO L87 Difference]: Start difference. First operand 1102 states and 1306 transitions. Second operand has 36 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 30 states have internal predecessors, (95), 11 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-13 12:18:32,667 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 12:18:34,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:18:39,991 WARN L539 Checker$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 12:18:41,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:18:44,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:18:46,138 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 12:18:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:18:46,803 INFO L93 Difference]: Finished difference Result 1462 states and 1712 transitions. [2022-12-13 12:18:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 12:18:46,803 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 30 states have internal predecessors, (95), 11 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17) Word has length 165 [2022-12-13 12:18:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:18:46,807 INFO L225 Difference]: With dead ends: 1462 [2022-12-13 12:18:46,807 INFO L226 Difference]: Without dead ends: 1460 [2022-12-13 12:18:46,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 145 SyntacticMatches, 21 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=422, Invalid=6384, Unknown=0, NotChecked=0, Total=6806 [2022-12-13 12:18:46,808 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 260 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 3898 mSolverCounterSat, 148 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3898 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:18:46,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2916 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3898 Invalid, 6 Unknown, 0 Unchecked, 17.1s Time] [2022-12-13 12:18:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2022-12-13 12:18:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1106. [2022-12-13 12:18:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 760 states have (on average 1.0842105263157895) internal successors, (824), 778 states have internal predecessors, (824), 224 states have call successors, (224), 106 states have call predecessors, (224), 121 states have return successors, (261), 221 states have call predecessors, (261), 218 states have call successors, (261) [2022-12-13 12:18:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1309 transitions. [2022-12-13 12:18:46,988 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1309 transitions. Word has length 165 [2022-12-13 12:18:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:18:46,988 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1309 transitions. [2022-12-13 12:18:46,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 30 states have internal predecessors, (95), 11 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-13 12:18:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1309 transitions. [2022-12-13 12:18:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 12:18:46,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:18:46,990 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:18:46,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 12:18:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 12:18:47,191 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:18:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:18:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1773650534, now seen corresponding path program 1 times [2022-12-13 12:18:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:18:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704134622] [2022-12-13 12:18:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:18:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:18:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:18:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:18:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:18:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:18:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:18:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:18:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:18:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:18:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:18:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:18:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:18:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:18:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:18:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:18:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:18:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:18:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:18:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-13 12:18:50,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:18:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704134622] [2022-12-13 12:18:50,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704134622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:18:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833397262] [2022-12-13 12:18:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:18:50,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:18:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:18:50,623 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:18:50,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 12:18:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:18:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 12:18:51,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:18:51,710 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 12:18:51,891 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 10 treesize of output 8 [2022-12-13 12:18:52,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:18:52,027 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 12:18:52,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2022-12-13 12:18:54,372 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-12-13 12:18:54,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 69 treesize of output 41 [2022-12-13 12:18:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 79 proven. 48 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 12:18:54,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:19:08,650 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:19:08,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833397262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:19:08,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:19:08,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 50 [2022-12-13 12:19:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360286106] [2022-12-13 12:19:08,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:19:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 12:19:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:19:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 12:19:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2780, Unknown=4, NotChecked=0, Total=2970 [2022-12-13 12:19:08,811 INFO L87 Difference]: Start difference. First operand 1106 states and 1309 transitions. Second operand has 50 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 44 states have internal predecessors, (150), 19 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-12-13 12:19:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:19:29,149 INFO L93 Difference]: Finished difference Result 1597 states and 1902 transitions. [2022-12-13 12:19:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-13 12:19:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 44 states have internal predecessors, (150), 19 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 167 [2022-12-13 12:19:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:19:29,153 INFO L225 Difference]: With dead ends: 1597 [2022-12-13 12:19:29,154 INFO L226 Difference]: Without dead ends: 1505 [2022-12-13 12:19:29,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 184 SyntacticMatches, 25 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6663 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=1928, Invalid=19394, Unknown=140, NotChecked=0, Total=21462 [2022-12-13 12:19:29,156 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1401 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 12133 mSolverCounterSat, 1555 mSolverCounterUnsat, 261 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 13949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 12133 IncrementalHoareTripleChecker+Invalid, 261 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:19:29,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 792 Invalid, 13949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1555 Valid, 12133 Invalid, 261 Unknown, 0 Unchecked, 12.3s Time] [2022-12-13 12:19:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-12-13 12:19:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1287. [2022-12-13 12:19:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 891 states have (on average 1.0897867564534232) internal successors, (971), 910 states have internal predecessors, (971), 252 states have call successors, (252), 124 states have call predecessors, (252), 143 states have return successors, (297), 252 states have call predecessors, (297), 245 states have call successors, (297) [2022-12-13 12:19:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1520 transitions. [2022-12-13 12:19:29,398 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1520 transitions. Word has length 167 [2022-12-13 12:19:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:19:29,398 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1520 transitions. [2022-12-13 12:19:29,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 45 states have (on average 3.3333333333333335) internal successors, (150), 44 states have internal predecessors, (150), 19 states have call successors, (39), 7 states have call predecessors, (39), 8 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-12-13 12:19:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1520 transitions. [2022-12-13 12:19:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 12:19:29,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:19:29,400 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:19:29,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 12:19:29,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 12:19:29,601 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:19:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:19:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1412595227, now seen corresponding path program 1 times [2022-12-13 12:19:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:19:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296695686] [2022-12-13 12:19:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:19:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:19:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:19:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:19:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:19:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:19:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:19:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:19:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:19:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:19:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:19:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:19:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:19:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:19:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:19:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:19:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:19:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:19:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-12-13 12:19:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:19:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296695686] [2022-12-13 12:19:29,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296695686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:19:29,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:19:29,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:19:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401072347] [2022-12-13 12:19:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:19:29,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:19:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:19:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:19:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:19:29,846 INFO L87 Difference]: Start difference. First operand 1287 states and 1520 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 12:19:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:19:30,523 INFO L93 Difference]: Finished difference Result 1919 states and 2248 transitions. [2022-12-13 12:19:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:19:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 169 [2022-12-13 12:19:30,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:19:30,526 INFO L225 Difference]: With dead ends: 1919 [2022-12-13 12:19:30,526 INFO L226 Difference]: Without dead ends: 1288 [2022-12-13 12:19:30,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:19:30,528 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 185 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:19:30,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 211 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:19:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2022-12-13 12:19:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1287. [2022-12-13 12:19:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 895 states have (on average 1.0849162011173183) internal successors, (971), 914 states have internal predecessors, (971), 244 states have call successors, (244), 124 states have call predecessors, (244), 147 states have return successors, (293), 248 states have call predecessors, (293), 237 states have call successors, (293) [2022-12-13 12:19:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1508 transitions. [2022-12-13 12:19:30,752 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1508 transitions. Word has length 169 [2022-12-13 12:19:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:19:30,752 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1508 transitions. [2022-12-13 12:19:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 12:19:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1508 transitions. [2022-12-13 12:19:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 12:19:30,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:19:30,753 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:19:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 12:19:30,753 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:19:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:19:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2101651892, now seen corresponding path program 1 times [2022-12-13 12:19:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:19:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817271405] [2022-12-13 12:19:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:19:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:19:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:19:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:19:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:19:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:19:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:19:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:19:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:19:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:19:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:19:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:19:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:19:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:19:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:19:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:19:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 12:19:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:19:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-13 12:19:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:19:31,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817271405] [2022-12-13 12:19:31,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817271405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:19:31,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:19:31,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:19:31,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654362367] [2022-12-13 12:19:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:19:31,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:19:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:19:31,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:19:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:19:31,220 INFO L87 Difference]: Start difference. First operand 1287 states and 1508 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:19:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:19:32,039 INFO L93 Difference]: Finished difference Result 1305 states and 1527 transitions. [2022-12-13 12:19:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:19:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 179 [2022-12-13 12:19:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:19:32,043 INFO L225 Difference]: With dead ends: 1305 [2022-12-13 12:19:32,043 INFO L226 Difference]: Without dead ends: 1303 [2022-12-13 12:19:32,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:19:32,043 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 132 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:19:32,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 448 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:19:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-12-13 12:19:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1301. [2022-12-13 12:19:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 904 states have (on average 1.084070796460177) internal successors, (980), 923 states have internal predecessors, (980), 246 states have call successors, (246), 127 states have call predecessors, (246), 150 states have return successors, (295), 250 states have call predecessors, (295), 239 states have call successors, (295) [2022-12-13 12:19:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1521 transitions. [2022-12-13 12:19:32,270 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1521 transitions. Word has length 179 [2022-12-13 12:19:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:19:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1521 transitions. [2022-12-13 12:19:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:19:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1521 transitions. [2022-12-13 12:19:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 12:19:32,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:19:32,271 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:19:32,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 12:19:32,271 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:19:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:19:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1581974493, now seen corresponding path program 1 times [2022-12-13 12:19:32,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:19:32,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095647811] [2022-12-13 12:19:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:19:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:19:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:19:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:19:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:19:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:19:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:19:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:19:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:19:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:19:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:19:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:19:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:19:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:19:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:19:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:19:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:19:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:19:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:19:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:19:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-12-13 12:19:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:19:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095647811] [2022-12-13 12:19:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095647811] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:19:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842679300] [2022-12-13 12:19:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:19:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:19:33,416 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:19:33,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 12:19:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:19:33,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 12:19:33,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:19:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 66 proven. 20 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-13 12:19:34,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:19:34,845 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 29 treesize of output 17 [2022-12-13 12:19:34,913 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 12:19:34,913 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 31 treesize of output 25 [2022-12-13 12:19:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-12-13 12:19:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842679300] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:19:34,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:19:34,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 10] total 28 [2022-12-13 12:19:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810176947] [2022-12-13 12:19:34,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:19:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 12:19:34,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:19:34,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 12:19:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=652, Unknown=2, NotChecked=0, Total=756 [2022-12-13 12:19:34,938 INFO L87 Difference]: Start difference. First operand 1301 states and 1521 transitions. Second operand has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 24 states have internal predecessors, (137), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 10 states have call predecessors, (37), 9 states have call successors, (37) [2022-12-13 12:19:37,190 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 12:19:39,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:19:41,380 WARN L539 Checker$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 12:19:43,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:19:45,743 WARN L539 Checker$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 12:19:48,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:19:54,277 WARN L539 Checker$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 12:19:56,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:19:58,412 WARN L539 Checker$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 12:20:00,440 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 12:20:02,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:02,579 INFO L93 Difference]: Finished difference Result 2007 states and 2302 transitions. [2022-12-13 12:20:02,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 12:20:02,580 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 24 states have internal predecessors, (137), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 10 states have call predecessors, (37), 9 states have call successors, (37) Word has length 184 [2022-12-13 12:20:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:02,583 INFO L225 Difference]: With dead ends: 2007 [2022-12-13 12:20:02,583 INFO L226 Difference]: Without dead ends: 1340 [2022-12-13 12:20:02,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 391 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=760, Invalid=4047, Unknown=23, NotChecked=0, Total=4830 [2022-12-13 12:20:02,584 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 546 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 4735 mSolverCounterSat, 510 mSolverCounterUnsat, 73 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 5318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 4735 IncrementalHoareTripleChecker+Invalid, 73 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:02,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 438 Invalid, 5318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 4735 Invalid, 73 Unknown, 0 Unchecked, 25.1s Time] [2022-12-13 12:20:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-12-13 12:20:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1148. [2022-12-13 12:20:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 834 states have (on average 1.0935251798561152) internal successors, (912), 856 states have internal predecessors, (912), 186 states have call successors, (186), 106 states have call predecessors, (186), 127 states have return successors, (222), 185 states have call predecessors, (222), 182 states have call successors, (222) [2022-12-13 12:20:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1320 transitions. [2022-12-13 12:20:02,789 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1320 transitions. Word has length 184 [2022-12-13 12:20:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:02,789 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1320 transitions. [2022-12-13 12:20:02,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 24 states have internal predecessors, (137), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 10 states have call predecessors, (37), 9 states have call successors, (37) [2022-12-13 12:20:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1320 transitions. [2022-12-13 12:20:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 12:20:02,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:02,790 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:20:02,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 12:20:02,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 12:20:02,991 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 895006780, now seen corresponding path program 1 times [2022-12-13 12:20:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:02,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573337974] [2022-12-13 12:20:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:20:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:20:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:20:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:20:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:20:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:20:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:20:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 12:20:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:20:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-12-13 12:20:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573337974] [2022-12-13 12:20:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573337974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:04,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:04,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 12:20:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935393469] [2022-12-13 12:20:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 12:20:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 12:20:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:20:04,670 INFO L87 Difference]: Start difference. First operand 1148 states and 1320 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 12:20:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:06,452 INFO L93 Difference]: Finished difference Result 1529 states and 1771 transitions. [2022-12-13 12:20:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:20:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 183 [2022-12-13 12:20:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:06,455 INFO L225 Difference]: With dead ends: 1529 [2022-12-13 12:20:06,455 INFO L226 Difference]: Without dead ends: 1274 [2022-12-13 12:20:06,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:20:06,456 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 183 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:06,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 542 Invalid, 2327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 12:20:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2022-12-13 12:20:06,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1148. [2022-12-13 12:20:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 834 states have (on average 1.0887290167865706) internal successors, (908), 856 states have internal predecessors, (908), 186 states have call successors, (186), 106 states have call predecessors, (186), 127 states have return successors, (222), 185 states have call predecessors, (222), 182 states have call successors, (222) [2022-12-13 12:20:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1316 transitions. [2022-12-13 12:20:06,667 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1316 transitions. Word has length 183 [2022-12-13 12:20:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:06,667 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1316 transitions. [2022-12-13 12:20:06,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 12:20:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1316 transitions. [2022-12-13 12:20:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 12:20:06,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:06,668 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:20:06,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 12:20:06,668 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1153172218, now seen corresponding path program 1 times [2022-12-13 12:20:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:06,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290630416] [2022-12-13 12:20:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:06,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:20:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:20:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:20:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:20:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:20:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:20:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:20:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 12:20:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:20:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-12-13 12:20:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290630416] [2022-12-13 12:20:07,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290630416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:07,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:07,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:20:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567183150] [2022-12-13 12:20:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:20:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:20:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:20:07,179 INFO L87 Difference]: Start difference. First operand 1148 states and 1316 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:20:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:07,947 INFO L93 Difference]: Finished difference Result 1580 states and 1821 transitions. [2022-12-13 12:20:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:20:07,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 183 [2022-12-13 12:20:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:07,950 INFO L225 Difference]: With dead ends: 1580 [2022-12-13 12:20:07,950 INFO L226 Difference]: Without dead ends: 1115 [2022-12-13 12:20:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 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 12:20:07,951 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 122 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:07,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 209 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:20:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-12-13 12:20:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2022-12-13 12:20:08,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 804 states have (on average 1.0808457711442787) internal successors, (869), 823 states have internal predecessors, (869), 186 states have call successors, (186), 106 states have call predecessors, (186), 124 states have return successors, (219), 185 states have call predecessors, (219), 182 states have call successors, (219) [2022-12-13 12:20:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1274 transitions. [2022-12-13 12:20:08,153 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1274 transitions. Word has length 183 [2022-12-13 12:20:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:08,154 INFO L495 AbstractCegarLoop]: Abstraction has 1115 states and 1274 transitions. [2022-12-13 12:20:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:20:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1274 transitions. [2022-12-13 12:20:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 12:20:08,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:08,155 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:20:08,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 12:20:08,155 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 443434595, now seen corresponding path program 1 times [2022-12-13 12:20:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236910317] [2022-12-13 12:20:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:20:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:20:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:20:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:20:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:20:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:20:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:20:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 12:20:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:20:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-13 12:20:09,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:09,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236910317] [2022-12-13 12:20:09,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236910317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:09,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:09,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 12:20:09,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036867952] [2022-12-13 12:20:09,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:09,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:20:09,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:20:09,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:20:09,049 INFO L87 Difference]: Start difference. First operand 1115 states and 1274 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:20:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:10,378 INFO L93 Difference]: Finished difference Result 1150 states and 1310 transitions. [2022-12-13 12:20:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:20:10,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 185 [2022-12-13 12:20:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:10,382 INFO L225 Difference]: With dead ends: 1150 [2022-12-13 12:20:10,382 INFO L226 Difference]: Without dead ends: 1148 [2022-12-13 12:20:10,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-12-13 12:20:10,382 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 158 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:10,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 664 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 12:20:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-12-13 12:20:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1123. [2022-12-13 12:20:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 810 states have (on average 1.0790123456790124) internal successors, (874), 829 states have internal predecessors, (874), 186 states have call successors, (186), 108 states have call predecessors, (186), 126 states have return successors, (219), 185 states have call predecessors, (219), 182 states have call successors, (219) [2022-12-13 12:20:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1279 transitions. [2022-12-13 12:20:10,592 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1279 transitions. Word has length 185 [2022-12-13 12:20:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:10,592 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1279 transitions. [2022-12-13 12:20:10,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-13 12:20:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1279 transitions. [2022-12-13 12:20:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-13 12:20:10,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:10,593 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:20:10,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 12:20:10,594 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1606933027, now seen corresponding path program 1 times [2022-12-13 12:20:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:10,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166249680] [2022-12-13 12:20:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:20:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:20:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:20:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:20:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:20:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:20:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:20:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:20:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:20:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:20:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 12:20:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 12:20:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 12:20:11,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:11,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166249680] [2022-12-13 12:20:11,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166249680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:11,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:11,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 12:20:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112626503] [2022-12-13 12:20:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:11,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:20:11,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:20:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:20:11,223 INFO L87 Difference]: Start difference. First operand 1123 states and 1279 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 12:20:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:12,478 INFO L93 Difference]: Finished difference Result 1186 states and 1347 transitions. [2022-12-13 12:20:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:20:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 191 [2022-12-13 12:20:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:12,482 INFO L225 Difference]: With dead ends: 1186 [2022-12-13 12:20:12,482 INFO L226 Difference]: Without dead ends: 1184 [2022-12-13 12:20:12,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-12-13 12:20:12,483 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 226 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:12,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 524 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 12:20:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-12-13 12:20:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1175. [2022-12-13 12:20:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 845 states have (on average 1.0757396449704142) internal successors, (909), 868 states have internal predecessors, (909), 192 states have call successors, (192), 115 states have call predecessors, (192), 137 states have return successors, (229), 191 states have call predecessors, (229), 188 states have call successors, (229) [2022-12-13 12:20:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1330 transitions. [2022-12-13 12:20:12,783 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1330 transitions. Word has length 191 [2022-12-13 12:20:12,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:12,783 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1330 transitions. [2022-12-13 12:20:12,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 12:20:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1330 transitions. [2022-12-13 12:20:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-13 12:20:12,785 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:12,785 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:20:12,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-13 12:20:12,785 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -719319451, now seen corresponding path program 1 times [2022-12-13 12:20:12,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:12,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469760800] [2022-12-13 12:20:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:20:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:20:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:20:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:20:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:20:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 12:20:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 12:20:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:20:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 12:20:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 12:20:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 12:20:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 12:20:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-12-13 12:20:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469760800] [2022-12-13 12:20:15,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469760800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:15,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:15,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-13 12:20:15,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530010263] [2022-12-13 12:20:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:15,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:20:15,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:20:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:20:15,597 INFO L87 Difference]: Start difference. First operand 1175 states and 1330 transitions. Second operand has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 18 states have internal predecessors, (78), 9 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-13 12:20:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:17,851 INFO L93 Difference]: Finished difference Result 1212 states and 1371 transitions. [2022-12-13 12:20:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:20:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 18 states have internal predecessors, (78), 9 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) Word has length 191 [2022-12-13 12:20:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:17,854 INFO L225 Difference]: With dead ends: 1212 [2022-12-13 12:20:17,854 INFO L226 Difference]: Without dead ends: 1210 [2022-12-13 12:20:17,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=1267, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 12:20:17,855 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 458 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:17,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 437 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 12:20:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-12-13 12:20:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1118. [2022-12-13 12:20:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 808 states have (on average 1.073019801980198) internal successors, (867), 830 states have internal predecessors, (867), 179 states have call successors, (179), 109 states have call predecessors, (179), 130 states have return successors, (215), 178 states have call predecessors, (215), 176 states have call successors, (215) [2022-12-13 12:20:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1261 transitions. [2022-12-13 12:20:18,050 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1261 transitions. Word has length 191 [2022-12-13 12:20:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:18,050 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1261 transitions. [2022-12-13 12:20:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 18 states have internal predecessors, (78), 9 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-13 12:20:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1261 transitions. [2022-12-13 12:20:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 12:20:18,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:18,051 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 12:20:18,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 12:20:18,052 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1696843699, now seen corresponding path program 1 times [2022-12-13 12:20:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:18,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664957720] [2022-12-13 12:20:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:20:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:20:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:20:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:20:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:20:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:20:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:20:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:20:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:20:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:20:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-12-13 12:20:18,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:18,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664957720] [2022-12-13 12:20:18,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664957720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:20:18,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:20:18,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:20:18,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782024738] [2022-12-13 12:20:18,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:20:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:20:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:20:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:20:18,368 INFO L87 Difference]: Start difference. First operand 1118 states and 1261 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 12:20:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:20:19,189 INFO L93 Difference]: Finished difference Result 1244 states and 1393 transitions. [2022-12-13 12:20:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:20:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 201 [2022-12-13 12:20:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:20:19,192 INFO L225 Difference]: With dead ends: 1244 [2022-12-13 12:20:19,192 INFO L226 Difference]: Without dead ends: 1113 [2022-12-13 12:20:19,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:20:19,193 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 193 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:20:19,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 348 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:20:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-12-13 12:20:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1112. [2022-12-13 12:20:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 805 states have (on average 1.0695652173913044) internal successors, (861), 827 states have internal predecessors, (861), 176 states have call successors, (176), 109 states have call predecessors, (176), 130 states have return successors, (212), 175 states have call predecessors, (212), 173 states have call successors, (212) [2022-12-13 12:20:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1249 transitions. [2022-12-13 12:20:19,387 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1249 transitions. Word has length 201 [2022-12-13 12:20:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:20:19,387 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1249 transitions. [2022-12-13 12:20:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 12:20:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1249 transitions. [2022-12-13 12:20:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 12:20:19,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:20:19,388 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:19,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 12:20:19,388 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:20:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:20:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1288647615, now seen corresponding path program 1 times [2022-12-13 12:20:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:20:19,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543080540] [2022-12-13 12:20:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:19,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:20:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:20:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:20:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:20:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:20:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:20:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:20:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:20:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:20:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:20:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:20:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:20:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:20:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:20:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:20:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:20:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:20:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 12:20:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:20:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:20:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:20:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 12:20:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-12-13 12:20:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:20:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543080540] [2022-12-13 12:20:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543080540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:20:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018718226] [2022-12-13 12:20:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:20:20,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:20:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:20:20,781 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:20:20,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 12:20:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:20:21,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 108 conjunts are in the unsatisfiable core [2022-12-13 12:20:21,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:20:21,253 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 13 treesize of output 9 [2022-12-13 12:20:22,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:20:22,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:20:22,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:20:22,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:20:22,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2022-12-13 12:20:25,306 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-12-13 12:20:25,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 50 [2022-12-13 12:20:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 100 proven. 128 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 12:20:28,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:20:29,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018718226] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:20:29,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:20:29,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30] total 46 [2022-12-13 12:20:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273211667] [2022-12-13 12:20:29,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:20:29,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 12:20:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:20:29,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 12:20:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2369, Unknown=3, NotChecked=0, Total=2550 [2022-12-13 12:20:29,343 INFO L87 Difference]: Start difference. First operand 1112 states and 1249 transitions. Second operand has 46 states, 40 states have (on average 5.15) internal successors, (206), 39 states have internal predecessors, (206), 20 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (46), 16 states have call predecessors, (46), 20 states have call successors, (46) [2022-12-13 12:20:36,180 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 12:20:40,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:20:43,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:20:44,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:20:52,136 WARN L539 Checker$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 12:20:53,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:20:54,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:20:58,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:00,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:01,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:03,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:05,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:08,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:14,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:16,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:17,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:19,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:20,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:21,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:22,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:24,392 WARN L539 Checker$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 12:21:26,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:30,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:31,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:32,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:34,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:35,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:36,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:38,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:41,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:44,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:47,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:53,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:55,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:57,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:58,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:21:59,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:01,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:04,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:11,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:12,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:14,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:18,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:20,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:24,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:25,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:34,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:37,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:38,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:41,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:47,143 WARN L539 Checker$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 12:22:48,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:52,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:22:57,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:00,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:04,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:08,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:10,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:12,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:13,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:17,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:19,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:20,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:21,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:24,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:30,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:34,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:35,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:36,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:39,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:41,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:44,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:46,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:47,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:52,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:23:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:23:52,163 INFO L93 Difference]: Finished difference Result 1599 states and 1808 transitions. [2022-12-13 12:23:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-13 12:23:52,164 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 5.15) internal successors, (206), 39 states have internal predecessors, (206), 20 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (46), 16 states have call predecessors, (46), 20 states have call successors, (46) Word has length 204 [2022-12-13 12:23:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:23:52,166 INFO L225 Difference]: With dead ends: 1599 [2022-12-13 12:23:52,166 INFO L226 Difference]: Without dead ends: 1277 [2022-12-13 12:23:52,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 238 SyntacticMatches, 21 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=1135, Invalid=11943, Unknown=32, NotChecked=0, Total=13110 [2022-12-13 12:23:52,168 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 987 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 9722 mSolverCounterSat, 871 mSolverCounterUnsat, 201 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 10794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 9722 IncrementalHoareTripleChecker+Invalid, 201 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:23:52,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1089 Invalid, 10794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 9722 Invalid, 201 Unknown, 0 Unchecked, 181.1s Time] [2022-12-13 12:23:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-12-13 12:23:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1218. [2022-12-13 12:23:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 885 states have (on average 1.0677966101694916) internal successors, (945), 907 states have internal predecessors, (945), 193 states have call successors, (193), 123 states have call predecessors, (193), 139 states have return successors, (223), 187 states have call predecessors, (223), 188 states have call successors, (223) [2022-12-13 12:23:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1361 transitions. [2022-12-13 12:23:52,425 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1361 transitions. Word has length 204 [2022-12-13 12:23:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:23:52,426 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1361 transitions. [2022-12-13 12:23:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 5.15) internal successors, (206), 39 states have internal predecessors, (206), 20 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (46), 16 states have call predecessors, (46), 20 states have call successors, (46) [2022-12-13 12:23:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1361 transitions. [2022-12-13 12:23:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-12-13 12:23:52,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:23:52,427 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 12:23:52,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 12:23:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-12-13 12:23:52,628 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:23:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:23:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 632035852, now seen corresponding path program 1 times [2022-12-13 12:23:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:23:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698262815] [2022-12-13 12:23:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:23:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:23:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:23:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:23:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:23:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:23:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:23:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:23:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:23:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:23:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:23:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:23:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:23:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:23:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 12:23:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:23:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:23:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:23:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:23:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 12:23:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 12:23:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 12:23:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 12:23:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:23:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-12-13 12:23:55,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:23:55,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698262815] [2022-12-13 12:23:55,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698262815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:23:55,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254334959] [2022-12-13 12:23:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:23:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:23:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:23:55,023 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:23:55,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 12:23:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:23:55,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-13 12:23:55,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:23:55,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:24:00,027 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 10 treesize of output 8 [2022-12-13 12:24:02,097 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_109| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_109|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_7|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_7|)) .cse0) (not (= .cse0 0))))) is different from true [2022-12-13 12:24:04,324 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_110| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_110|) 8))) (and (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_8|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_8|))) (not (= .cse0 0))))) is different from true [2022-12-13 12:24:06,469 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_111| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_111|) 8))) (and (not (= 0 .cse0)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9|)) .cse0)))) is different from true [2022-12-13 12:24:09,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:24:09,225 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-12-13 12:24:09,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2022-12-13 12:24:16,448 INFO L321 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2022-12-13 12:24:16,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 53 [2022-12-13 12:24:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 45 proven. 79 refuted. 16 times theorem prover too weak. 58 trivial. 20 not checked. [2022-12-13 12:24:16,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:24:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254334959] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:24:17,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:24:17,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33] total 48 [2022-12-13 12:24:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015582301] [2022-12-13 12:24:17,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:24:17,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 12:24:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:24:17,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 12:24:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2195, Unknown=5, NotChecked=288, Total=2652 [2022-12-13 12:24:17,021 INFO L87 Difference]: Start difference. First operand 1218 states and 1361 transitions. Second operand has 48 states, 43 states have (on average 3.5348837209302326) internal successors, (152), 39 states have internal predecessors, (152), 22 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (43), 19 states have call predecessors, (43), 18 states have call successors, (43) [2022-12-13 12:24:24,218 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 12:24:26,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:24:32,658 WARN L539 Checker$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 12:24:34,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:24:36,770 WARN L539 Checker$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 12:24:42,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:24:44,174 WARN L539 Checker$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 12:24:46,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:24:48,661 WARN L539 Checker$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 12:25:09,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:25:11,666 WARN L539 Checker$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 12:25:13,759 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 12:25:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:25:23,799 INFO L93 Difference]: Finished difference Result 1553 states and 1725 transitions. [2022-12-13 12:25:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 12:25:23,800 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 3.5348837209302326) internal successors, (152), 39 states have internal predecessors, (152), 22 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (43), 19 states have call predecessors, (43), 18 states have call successors, (43) Word has length 203 [2022-12-13 12:25:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:25:23,802 INFO L225 Difference]: With dead ends: 1553 [2022-12-13 12:25:23,802 INFO L226 Difference]: Without dead ends: 1551 [2022-12-13 12:25:23,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 223 SyntacticMatches, 12 SemanticMatches, 93 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=869, Invalid=7507, Unknown=8, NotChecked=546, Total=8930 [2022-12-13 12:25:23,803 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1127 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 7675 mSolverCounterSat, 1077 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 9913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 7675 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 1147 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:25:23,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 808 Invalid, 9913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 7675 Invalid, 14 Unknown, 1147 Unchecked, 33.2s Time] [2022-12-13 12:25:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-12-13 12:25:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1291. [2022-12-13 12:25:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 930 states have (on average 1.0688172043010753) internal successors, (994), 954 states have internal predecessors, (994), 208 states have call successors, (208), 134 states have call predecessors, (208), 152 states have return successors, (240), 202 states have call predecessors, (240), 201 states have call successors, (240) [2022-12-13 12:25:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1442 transitions. [2022-12-13 12:25:24,130 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1442 transitions. Word has length 203 [2022-12-13 12:25:24,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:25:24,131 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1442 transitions. [2022-12-13 12:25:24,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 3.5348837209302326) internal successors, (152), 39 states have internal predecessors, (152), 22 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (43), 19 states have call predecessors, (43), 18 states have call successors, (43) [2022-12-13 12:25:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1442 transitions. [2022-12-13 12:25:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 12:25:24,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:25:24,133 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:24,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 12:25:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-13 12:25:24,334 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:25:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:25:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2102645857, now seen corresponding path program 1 times [2022-12-13 12:25:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:25:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046690609] [2022-12-13 12:25:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:25:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:25:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:25:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:25:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:25:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:25:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:25:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:25:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:25:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:25:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:25:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:25:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:25:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:25:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:25:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:25:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:25:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:25:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:25:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:25:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 12:25:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:25:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:25:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:25:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:25:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 12:25:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-12-13 12:25:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:25:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046690609] [2022-12-13 12:25:26,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046690609] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:25:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082568853] [2022-12-13 12:25:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:25:26,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:25:26,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:25:26,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:25:26,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 12:25:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:25:27,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 12:25:27,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:25:27,393 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 12:25:27,562 WARN L859 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-12-13 12:25:27,571 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 12:25:27,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 12:25:28,041 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 12:25:28,042 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 15 treesize of output 15 [2022-12-13 12:25:34,539 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 17 treesize of output 19 [2022-12-13 12:25:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 183 proven. 51 refuted. 0 times theorem prover too weak. 61 trivial. 2 not checked. [2022-12-13 12:25:41,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:25:41,487 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2704 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_2704) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset|))) (<= .cse0 (+ 18446744073709551615 (* (div (+ (- 1) .cse0) 18446744073709551616) 18446744073709551616))))) is different from false [2022-12-13 12:25:41,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082568853] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:25:41,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:25:41,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2022-12-13 12:25:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009402047] [2022-12-13 12:25:41,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:25:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 12:25:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:25:41,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 12:25:41,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1269, Unknown=3, NotChecked=146, Total=1560 [2022-12-13 12:25:41,495 INFO L87 Difference]: Start difference. First operand 1291 states and 1442 transitions. Second operand has 38 states, 36 states have (on average 6.166666666666667) internal successors, (222), 32 states have internal predecessors, (222), 17 states have call successors, (50), 10 states have call predecessors, (50), 11 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) [2022-12-13 12:25:44,020 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 12:25:46,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:25:50,313 WARN L539 Checker$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 12:25:52,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:25:54,376 WARN L539 Checker$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 12:25:57,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:25:59,432 WARN L539 Checker$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 12:26:01,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:26:04,683 WARN L539 Checker$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 12:26:08,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:26:11,047 WARN L539 Checker$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 12:26:13,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:26:16,317 WARN L539 Checker$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 12:26:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:26:18,402 INFO L93 Difference]: Finished difference Result 1775 states and 2003 transitions. [2022-12-13 12:26:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 12:26:18,403 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 6.166666666666667) internal successors, (222), 32 states have internal predecessors, (222), 17 states have call successors, (50), 10 states have call predecessors, (50), 11 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) Word has length 206 [2022-12-13 12:26:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:26:18,405 INFO L225 Difference]: With dead ends: 1775 [2022-12-13 12:26:18,405 INFO L226 Difference]: Without dead ends: 1222 [2022-12-13 12:26:18,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 362 SyntacticMatches, 18 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=439, Invalid=3105, Unknown=4, NotChecked=234, Total=3782 [2022-12-13 12:26:18,406 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 645 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 8655 mSolverCounterSat, 704 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 9784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 8655 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:26:18,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 837 Invalid, 9784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 8655 Invalid, 50 Unknown, 375 Unchecked, 33.7s Time] [2022-12-13 12:26:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-12-13 12:26:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1135. [2022-12-13 12:26:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 824 states have (on average 1.0728155339805825) internal successors, (884), 848 states have internal predecessors, (884), 175 states have call successors, (175), 115 states have call predecessors, (175), 135 states have return successors, (206), 171 states have call predecessors, (206), 170 states have call successors, (206) [2022-12-13 12:26:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1265 transitions. [2022-12-13 12:26:18,715 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1265 transitions. Word has length 206 [2022-12-13 12:26:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:26:18,715 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1265 transitions. [2022-12-13 12:26:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 6.166666666666667) internal successors, (222), 32 states have internal predecessors, (222), 17 states have call successors, (50), 10 states have call predecessors, (50), 11 states have return successors, (47), 15 states have call predecessors, (47), 17 states have call successors, (47) [2022-12-13 12:26:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1265 transitions. [2022-12-13 12:26:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 12:26:18,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:26:18,716 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:18,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 12:26:18,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:26:18,917 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:26:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:26:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1502489949, now seen corresponding path program 1 times [2022-12-13 12:26:18,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:26:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823458538] [2022-12-13 12:26:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:26:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:26:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:26:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 12:26:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:26:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:26:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 12:26:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:26:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 12:26:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 12:26:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:26:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:26:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 12:26:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 12:26:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 12:26:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 12:26:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 12:26:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 12:26:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 12:26:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 12:26:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:22,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 12:26:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:26:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 12:26:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 12:26:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:26:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 12:26:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-12-13 12:26:23,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:26:23,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823458538] [2022-12-13 12:26:23,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823458538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:26:23,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269617201] [2022-12-13 12:26:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:26:23,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:26:23,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:26:23,798 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:26:23,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9aed3ef-1a98-48bf-a998-a699ebe3c051/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 12:26:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:26:24,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 12:26:24,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:26:24,245 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 12:26:24,500 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 12:26:24,500 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 12:26:24,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 12:26:24,553 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 11 treesize of output 7 [2022-12-13 12:26:25,390 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 12:26:25,390 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 15 treesize of output 15 [2022-12-13 12:27:23,893 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 15 treesize of output 17 [2022-12-13 12:27:23,896 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 19 treesize of output 21