./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/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_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/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_ae7aa9d3-4231-42ef-a454-03411c46849c/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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- 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 13:28:18,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:28:18,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:28:18,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:28:18,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:28:18,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:28:18,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:28:18,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:28:18,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:28:18,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:28:18,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:28:18,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:28:18,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:28:18,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:28:18,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:28:18,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:28:18,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:28:18,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:28:18,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:28:18,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:28:18,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:28:18,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:28:18,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:28:18,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:28:18,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:28:18,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:28:18,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:28:18,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:28:18,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:28:18,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:28:18,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:28:18,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:28:18,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:28:18,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:28:18,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:28:18,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:28:18,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:28:18,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:28:18,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:28:18,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:28:18,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:28:18,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 13:28:18,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:28:18,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:28:18,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:28:18,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:28:18,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:28:18,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:28:18,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:28:18,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:28:18,602 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:28:18,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:28:18,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:28:18,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:28:18,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:28:18,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:28:18,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:28:18,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:28:18,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:18,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:28:18,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:28:18,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:28:18,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:28:18,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:28:18,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:28:18,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:28:18,606 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:28:18,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:28:18,606 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:28:18,606 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_ae7aa9d3-4231-42ef-a454-03411c46849c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2022-12-13 13:28:18,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:28:18,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:28:18,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:28:18,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:28:18,819 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:28:18,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-12-13 13:28:21,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:28:21,871 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:28:21,872 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-12-13 13:28:21,906 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/data/1e259a39e/c51500f3b6274234b8f82c93c0502aad/FLAG150cb4936 [2022-12-13 13:28:21,917 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/data/1e259a39e/c51500f3b6274234b8f82c93c0502aad [2022-12-13 13:28:21,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:28:21,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:28:21,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:21,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:28:21,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:28:21,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:21" (1/1) ... [2022-12-13 13:28:21,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c66677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:21, skipping insertion in model container [2022-12-13 13:28:21,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:21" (1/1) ... [2022-12-13 13:28:21,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:28:21,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:28:22,172 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_ae7aa9d3-4231-42ef-a454-03411c46849c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-12-13 13:28:22,178 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_ae7aa9d3-4231-42ef-a454-03411c46849c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-12-13 13:28:22,814 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,814 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,815 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,815 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,816 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,826 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,826 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,827 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,828 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:22,893 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:22,893 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:22,894 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:22,897 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:28:22,899 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:28:22,899 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:28:23,188 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:28:23,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:28:23,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:28:23,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:28:23,191 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:28:23,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:28:23,192 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:28:23,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:28:23,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:28:23,194 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:28:23,194 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:28:23,371 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:28:23,390 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:28:23,407 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 13:28:23,417 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:28:23,442 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,442 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,479 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:28:23,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:23,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:28:23,523 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_ae7aa9d3-4231-42ef-a454-03411c46849c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-12-13 13:28:23,524 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_ae7aa9d3-4231-42ef-a454-03411c46849c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-12-13 13:28:23,546 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,547 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,547 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,547 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,548 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,552 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,552 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,553 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,553 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,557 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:23,557 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:23,558 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:28:23,560 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:28:23,561 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:28:23,561 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:28:23,573 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:28:23,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:28:23,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:28:23,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:28:23,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:28:23,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:28:23,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:28:23,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:28:23,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:28:23,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:28:23,578 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:28:23,591 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:28:23,598 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:28:23,605 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 13:28:23,609 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 13:28:23,625 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,625 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:28:23,641 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:28:23,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:23,793 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:28:23,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23 WrapperNode [2022-12-13 13:28:23,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:23,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:23,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:28:23,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:28:23,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,902 INFO L138 Inliner]: procedures = 691, calls = 2665, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 886 [2022-12-13 13:28:23,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:23,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:28:23,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:28:23,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:28:23,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:28:23,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:28:23,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:28:23,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:28:23,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (1/1) ... [2022-12-13 13:28:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:23,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:28:23,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:28:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-13 13:28:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-13 13:28:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 13:28:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:28:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 13:28:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:28:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-13 13:28:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:28:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-12-13 13:28:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:28:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 13:28:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-13 13:28:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 13:28:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:28:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-12-13 13:28:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 13:28:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 13:28:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-12-13 13:28:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:28:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-12-13 13:28:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-12-13 13:28:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:28:24,227 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:28:24,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:28:25,161 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:28:25,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:28:25,168 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:28:25,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:25 BoogieIcfgContainer [2022-12-13 13:28:25,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:28:25,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:28:25,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:28:25,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:28:25,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:28:21" (1/3) ... [2022-12-13 13:28:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d4234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:25, skipping insertion in model container [2022-12-13 13:28:25,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:23" (2/3) ... [2022-12-13 13:28:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d4234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:25, skipping insertion in model container [2022-12-13 13:28:25,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:25" (3/3) ... [2022-12-13 13:28:25,177 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2022-12-13 13:28:25,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:28:25,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:28:25,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:25,249 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;@4d46bfa2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:25,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:28:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-13 13:28:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 13:28:25,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:25,265 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:25,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1419889978, now seen corresponding path program 1 times [2022-12-13 13:28:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:25,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899914332] [2022-12-13 13:28:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:25,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:28:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:28:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:28:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 13:28:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899914332] [2022-12-13 13:28:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899914332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:25,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:25,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:28:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233017244] [2022-12-13 13:28:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:25,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:28:25,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:25,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:28:25,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:28:25,910 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:28:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:26,382 INFO L93 Difference]: Finished difference Result 304 states and 439 transitions. [2022-12-13 13:28:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:28:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2022-12-13 13:28:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:26,391 INFO L225 Difference]: With dead ends: 304 [2022-12-13 13:28:26,391 INFO L226 Difference]: Without dead ends: 150 [2022-12-13 13:28:26,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:28:26,396 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 225 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 172 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:28:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-13 13:28:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-12-13 13:28:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-13 13:28:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-12-13 13:28:26,436 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2022-12-13 13:28:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:26,436 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-12-13 13:28:26,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:28:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-12-13 13:28:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 13:28:26,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:26,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:26,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:28:26,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash -254215752, now seen corresponding path program 1 times [2022-12-13 13:28:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:26,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471165983] [2022-12-13 13:28:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 13:28:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:28:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 13:28:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 13:28:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471165983] [2022-12-13 13:28:27,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471165983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170175410] [2022-12-13 13:28:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:27,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:27,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:27,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:27,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:28:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:27,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:28:27,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-13 13:28:27,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:28:27,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170175410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:27,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:28:27,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-13 13:28:27,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723529174] [2022-12-13 13:28:27,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:27,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:28:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:28:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:28:27,590 INFO L87 Difference]: Start difference. First operand 148 states and 198 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:28:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:27,806 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2022-12-13 13:28:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:28:27,807 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2022-12-13 13:28:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:27,809 INFO L225 Difference]: With dead ends: 292 [2022-12-13 13:28:27,809 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 13:28:27,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:28:27,811 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 211 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 425 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:28:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 13:28:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-12-13 13:28:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2022-12-13 13:28:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2022-12-13 13:28:27,832 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2022-12-13 13:28:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:27,833 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2022-12-13 13:28:27,833 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:28:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2022-12-13 13:28:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 13:28:27,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:27,836 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 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] [2022-12-13 13:28:27,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:28:28,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:28,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1731779843, now seen corresponding path program 1 times [2022-12-13 13:28:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:28,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574354996] [2022-12-13 13:28:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:28:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:28:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:28:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 13:28:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:28,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574354996] [2022-12-13 13:28:28,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574354996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:28,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536834030] [2022-12-13 13:28:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:28,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:28,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:28,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:28:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:29,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:28:29,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 13:28:29,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:28:29,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536834030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:29,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:28:29,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-13 13:28:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179829869] [2022-12-13 13:28:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:28:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:28:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:28:29,251 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 13:28:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:29,480 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2022-12-13 13:28:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:28:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2022-12-13 13:28:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:29,483 INFO L225 Difference]: With dead ends: 247 [2022-12-13 13:28:29,483 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 13:28:29,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:28:29,485 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 226 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:29,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 553 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:28:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 13:28:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-12-13 13:28:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2022-12-13 13:28:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2022-12-13 13:28:29,502 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2022-12-13 13:28:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:29,502 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2022-12-13 13:28:29,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 13:28:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2022-12-13 13:28:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 13:28:29,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:29,504 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 13:28:29,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:28:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:29,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1773749607, now seen corresponding path program 2 times [2022-12-13 13:28:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:29,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751235427] [2022-12-13 13:28:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:28:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:28:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:28:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-13 13:28:30,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:30,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751235427] [2022-12-13 13:28:30,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751235427] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:30,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179491178] [2022-12-13 13:28:30,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:28:30,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:30,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:30,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:30,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:28:30,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:28:30,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:28:30,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:28:30,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-13 13:28:30,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:28:30,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179491178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:30,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:28:30,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-12-13 13:28:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026215561] [2022-12-13 13:28:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:28:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:28:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:28:30,703 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 13:28:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:30,780 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2022-12-13 13:28:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:28:30,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 131 [2022-12-13 13:28:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:30,782 INFO L225 Difference]: With dead ends: 163 [2022-12-13 13:28:30,782 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 13:28:30,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:28:30,783 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 23 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:30,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1345 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:28:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 13:28:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2022-12-13 13:28:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 14 states have call predecessors, (47), 16 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2022-12-13 13:28:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2022-12-13 13:28:30,794 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 131 [2022-12-13 13:28:30,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:30,794 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2022-12-13 13:28:30,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 13:28:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2022-12-13 13:28:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 13:28:30,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:30,796 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 13:28:30,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:28:30,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 13:28:30,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1277784929, now seen corresponding path program 1 times [2022-12-13 13:28:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:30,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171014928] [2022-12-13 13:28:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:28:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:28:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:28:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-13 13:28:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171014928] [2022-12-13 13:28:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171014928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462456110] [2022-12-13 13:28:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:31,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:31,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:31,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:31,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:28:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:31,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:28:31,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 13:28:32,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:28:32,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462456110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:32,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:28:32,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-13 13:28:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259101824] [2022-12-13 13:28:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:32,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:28:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:28:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:28:32,018 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 13:28:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:32,256 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2022-12-13 13:28:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:28:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 135 [2022-12-13 13:28:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:32,259 INFO L225 Difference]: With dead ends: 280 [2022-12-13 13:28:32,259 INFO L226 Difference]: Without dead ends: 157 [2022-12-13 13:28:32,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:28:32,260 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 225 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:32,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 681 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:28:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-13 13:28:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-12-13 13:28:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 96 states have internal predecessors, (112), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-12-13 13:28:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2022-12-13 13:28:32,270 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 135 [2022-12-13 13:28:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2022-12-13 13:28:32,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 13:28:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2022-12-13 13:28:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 13:28:32,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:32,272 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-12-13 13:28:32,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:28:32,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:32,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:32,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1196248684, now seen corresponding path program 1 times [2022-12-13 13:28:32,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:32,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180555315] [2022-12-13 13:28:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:32,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:28:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:28:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:28:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-12-13 13:28:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:33,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180555315] [2022-12-13 13:28:33,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180555315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:33,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:33,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:28:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588139957] [2022-12-13 13:28:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:33,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:28:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:28:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:28:33,626 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 13:28:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:34,331 INFO L93 Difference]: Finished difference Result 334 states and 471 transitions. [2022-12-13 13:28:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:28:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2022-12-13 13:28:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:34,333 INFO L225 Difference]: With dead ends: 334 [2022-12-13 13:28:34,333 INFO L226 Difference]: Without dead ends: 184 [2022-12-13 13:28:34,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:28:34,335 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 148 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:34,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 381 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:28:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-13 13:28:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2022-12-13 13:28:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 99 states have (on average 1.202020202020202) internal successors, (119), 101 states have internal predecessors, (119), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-12-13 13:28:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2022-12-13 13:28:34,352 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 141 [2022-12-13 13:28:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:34,353 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2022-12-13 13:28:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-13 13:28:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2022-12-13 13:28:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 13:28:34,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:34,355 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-12-13 13:28:34,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:28:34,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:34,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1454414122, now seen corresponding path program 1 times [2022-12-13 13:28:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:34,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730820300] [2022-12-13 13:28:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 13:28:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:28:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:28:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:28:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:28:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 13:28:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:28:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:28:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 13:28:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 13:28:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-13 13:28:37,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730820300] [2022-12-13 13:28:37,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730820300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067860723] [2022-12-13 13:28:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:37,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:37,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:37,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:28:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 13:28:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:37,745 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 13:28:38,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-12-13 13:28:38,153 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 22 treesize of output 14 [2022-12-13 13:28:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 13:28:38,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:28:38,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067860723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:38,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:28:38,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 30 [2022-12-13 13:28:38,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248775275] [2022-12-13 13:28:38,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:28:38,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:28:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2022-12-13 13:28:38,770 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-12-13 13:28:41,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:28:43,236 WARN L539 Checker$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 13:28:45,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:28:47,657 WARN L539 Checker$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 13:28:49,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:28:51,719 WARN L539 Checker$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 13:28:53,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:28:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:28:55,343 INFO L93 Difference]: Finished difference Result 477 states and 665 transitions. [2022-12-13 13:28:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 13:28:55,344 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 141 [2022-12-13 13:28:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:28:55,346 INFO L225 Difference]: With dead ends: 477 [2022-12-13 13:28:55,346 INFO L226 Difference]: Without dead ends: 322 [2022-12-13 13:28:55,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 13:28:55,348 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 319 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 266 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:28:55,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 743 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2450 Invalid, 7 Unknown, 0 Unchecked, 16.2s Time] [2022-12-13 13:28:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-12-13 13:28:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2022-12-13 13:28:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 190 states have (on average 1.2157894736842105) internal successors, (231), 195 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 26 states have return successors, (109), 93 states have call predecessors, (109), 93 states have call successors, (109) [2022-12-13 13:28:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 435 transitions. [2022-12-13 13:28:55,383 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 435 transitions. Word has length 141 [2022-12-13 13:28:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:55,384 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 435 transitions. [2022-12-13 13:28:55,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.8125) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-12-13 13:28:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 435 transitions. [2022-12-13 13:28:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 13:28:55,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:55,387 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:28:55,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:28:55,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:55,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -219135540, now seen corresponding path program 1 times [2022-12-13 13:28:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:55,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084087289] [2022-12-13 13:28:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:28:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:28:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:28:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:28:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 13:28:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 13:28:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 13:28:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 13:28:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:28:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 13:28:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 13:28:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:28:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 13:28:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 13:28:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:28:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:28:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:28:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-12-13 13:28:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:57,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084087289] [2022-12-13 13:28:57,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084087289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:57,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269475944] [2022-12-13 13:28:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:57,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:57,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:28:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:57,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 13:28:57,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:58,070 INFO L321 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-12-13 13:28:58,070 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 49 treesize of output 80 [2022-12-13 13:28:58,213 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 13:28:58,214 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 53 treesize of output 33 [2022-12-13 13:28:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 13:28:58,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:28:58,555 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 13:28:58,652 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 13:28:58,652 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 13:28:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-12-13 13:28:58,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269475944] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:28:58,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:28:58,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 12] total 27 [2022-12-13 13:28:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067830355] [2022-12-13 13:28:58,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:28:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 13:28:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 13:28:58,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-12-13 13:28:58,681 INFO L87 Difference]: Start difference. First operand 312 states and 435 transitions. Second operand has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 8 states have call predecessors, (37), 10 states have call successors, (37) [2022-12-13 13:29:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:08,239 INFO L93 Difference]: Finished difference Result 883 states and 1258 transitions. [2022-12-13 13:29:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 13:29:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 8 states have call predecessors, (37), 10 states have call successors, (37) Word has length 152 [2022-12-13 13:29:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:08,243 INFO L225 Difference]: With dead ends: 883 [2022-12-13 13:29:08,243 INFO L226 Difference]: Without dead ends: 728 [2022-12-13 13:29:08,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 329 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=491, Invalid=2589, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 13:29:08,245 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 875 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 482 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 4828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:08,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1328 Invalid, 4828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 4323 Invalid, 23 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 13:29:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-12-13 13:29:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 604. [2022-12-13 13:29:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 392 states have (on average 1.239795918367347) internal successors, (486), 403 states have internal predecessors, (486), 164 states have call successors, (164), 40 states have call predecessors, (164), 47 states have return successors, (237), 160 states have call predecessors, (237), 160 states have call successors, (237) [2022-12-13 13:29:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 887 transitions. [2022-12-13 13:29:08,306 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 887 transitions. Word has length 152 [2022-12-13 13:29:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:08,307 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 887 transitions. [2022-12-13 13:29:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.615384615384615) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (41), 8 states have call predecessors, (41), 7 states have return successors, (37), 8 states have call predecessors, (37), 10 states have call successors, (37) [2022-12-13 13:29:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 887 transitions. [2022-12-13 13:29:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 13:29:08,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:08,309 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:29:08,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:29:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 13:29:08,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:08,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1782750730, now seen corresponding path program 1 times [2022-12-13 13:29:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467809635] [2022-12-13 13:29:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:08,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 13:29:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 13:29:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 13:29:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 13:29:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:29:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 13:29:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 13:29:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:29:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 13:29:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:09,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 13:29:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:10,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:29:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 13:29:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:10,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467809635] [2022-12-13 13:29:10,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467809635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:10,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567899014] [2022-12-13 13:29:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:10,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:10,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:10,045 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:29:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:10,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 13:29:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:10,431 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 13:29:10,561 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 13:29:10,906 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 13:29:10,912 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 30 treesize of output 42 [2022-12-13 13:29:10,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 8 [2022-12-13 13:29:11,181 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-13 13:29:11,181 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 39 treesize of output 15 [2022-12-13 13:29:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 112 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 13:29:11,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:11,975 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 227 treesize of output 219 [2022-12-13 13:29:12,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567899014] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:12,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:29:12,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-12-13 13:29:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492897796] [2022-12-13 13:29:12,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:12,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 13:29:12,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 13:29:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 13:29:12,070 INFO L87 Difference]: Start difference. First operand 604 states and 887 transitions. Second operand has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 24 states have internal predecessors, (136), 13 states have call successors, (41), 8 states have call predecessors, (41), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2022-12-13 13:29:14,527 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 13:29:16,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:29:18,750 WARN L539 Checker$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 13:29:20,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:29:22,670 WARN L539 Checker$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 13:29:24,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:29:27,826 WARN L539 Checker$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 13:29:29,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:29:31,997 WARN L539 Checker$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 13:29:34,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:29:38,555 WARN L539 Checker$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 13:29:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:41,446 INFO L93 Difference]: Finished difference Result 1644 states and 2435 transitions. [2022-12-13 13:29:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 13:29:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 24 states have internal predecessors, (136), 13 states have call successors, (41), 8 states have call predecessors, (41), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) Word has length 152 [2022-12-13 13:29:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:41,451 INFO L225 Difference]: With dead ends: 1644 [2022-12-13 13:29:41,451 INFO L226 Difference]: Without dead ends: 1172 [2022-12-13 13:29:41,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=623, Invalid=5229, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 13:29:41,454 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 643 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 6127 mSolverCounterSat, 445 mSolverCounterUnsat, 53 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 6625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 6127 IncrementalHoareTripleChecker+Invalid, 53 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:41,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1304 Invalid, 6625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 6127 Invalid, 53 Unknown, 0 Unchecked, 27.7s Time] [2022-12-13 13:29:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2022-12-13 13:29:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 977. [2022-12-13 13:29:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 671 states have (on average 1.247391952309985) internal successors, (837), 691 states have internal predecessors, (837), 225 states have call successors, (225), 64 states have call predecessors, (225), 80 states have return successors, (337), 221 states have call predecessors, (337), 219 states have call successors, (337) [2022-12-13 13:29:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1399 transitions. [2022-12-13 13:29:41,542 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1399 transitions. Word has length 152 [2022-12-13 13:29:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:41,543 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1399 transitions. [2022-12-13 13:29:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.857142857142857) internal successors, (136), 24 states have internal predecessors, (136), 13 states have call successors, (41), 8 states have call predecessors, (41), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2022-12-13 13:29:41,543 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1399 transitions. [2022-12-13 13:29:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 13:29:41,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:41,545 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-12-13 13:29:41,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:29:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:41,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -675112198, now seen corresponding path program 1 times [2022-12-13 13:29:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:41,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5411534] [2022-12-13 13:29:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 13:29:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 13:29:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 13:29:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 13:29:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 13:29:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 13:29:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 13:29:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:29:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:29:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 13:29:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-12-13 13:29:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5411534] [2022-12-13 13:29:42,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5411534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025940194] [2022-12-13 13:29:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:42,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:42,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:42,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:29:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:42,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 13:29:42,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 13:29:42,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:29:42,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025940194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:42,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:29:42,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-12-13 13:29:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956811971] [2022-12-13 13:29:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:29:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:29:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:29:42,837 INFO L87 Difference]: Start difference. First operand 977 states and 1399 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:29:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:43,043 INFO L93 Difference]: Finished difference Result 2005 states and 2915 transitions. [2022-12-13 13:29:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:29:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2022-12-13 13:29:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:43,047 INFO L225 Difference]: With dead ends: 2005 [2022-12-13 13:29:43,047 INFO L226 Difference]: Without dead ends: 1052 [2022-12-13 13:29:43,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:29:43,050 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 13 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:43,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1455 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:29:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-12-13 13:29:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 992. [2022-12-13 13:29:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 683 states have (on average 1.2415812591508053) internal successors, (848), 706 states have internal predecessors, (848), 225 states have call successors, (225), 64 states have call predecessors, (225), 83 states have return successors, (364), 221 states have call predecessors, (364), 219 states have call successors, (364) [2022-12-13 13:29:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1437 transitions. [2022-12-13 13:29:43,132 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1437 transitions. Word has length 150 [2022-12-13 13:29:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:43,132 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1437 transitions. [2022-12-13 13:29:43,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:29:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1437 transitions. [2022-12-13 13:29:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 13:29:43,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:43,135 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-12-13 13:29:43,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:29:43,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:29:43,335 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash -243916651, now seen corresponding path program 1 times [2022-12-13 13:29:43,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:43,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312825476] [2022-12-13 13:29:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:43,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:29:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:29:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:29:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:29:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:29:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:29:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:29:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:29:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:29:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:29:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-12-13 13:29:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:43,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312825476] [2022-12-13 13:29:43,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312825476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:43,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136976239] [2022-12-13 13:29:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:43,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:29:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:29:44,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 13:29:44,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:29:44,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136976239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:44,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:29:44,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-12-13 13:29:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888016665] [2022-12-13 13:29:44,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:44,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:29:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:44,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:29:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:44,087 INFO L87 Difference]: Start difference. First operand 992 states and 1437 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:29:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:44,173 INFO L93 Difference]: Finished difference Result 2075 states and 3063 transitions. [2022-12-13 13:29:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:29:44,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2022-12-13 13:29:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:44,177 INFO L225 Difference]: With dead ends: 2075 [2022-12-13 13:29:44,177 INFO L226 Difference]: Without dead ends: 1098 [2022-12-13 13:29:44,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:29:44,181 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 9 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 579 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 13:29:44,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 579 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-12-13 13:29:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 998. [2022-12-13 13:29:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 691 states have (on average 1.2286541244573081) internal successors, (849), 712 states have internal predecessors, (849), 225 states have call successors, (225), 64 states have call predecessors, (225), 81 states have return successors, (324), 221 states have call predecessors, (324), 219 states have call successors, (324) [2022-12-13 13:29:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1398 transitions. [2022-12-13 13:29:44,319 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1398 transitions. Word has length 152 [2022-12-13 13:29:44,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:44,320 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1398 transitions. [2022-12-13 13:29:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:29:44,320 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1398 transitions. [2022-12-13 13:29:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 13:29:44,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:44,322 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:44,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:29:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:29:44,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1070803153, now seen corresponding path program 1 times [2022-12-13 13:29:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:44,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375146490] [2022-12-13 13:29:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:29:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:29:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:29:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:29:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:29:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:29:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:29:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:29:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:29:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:29:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-12-13 13:29:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:44,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375146490] [2022-12-13 13:29:44,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375146490] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:44,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843071970] [2022-12-13 13:29:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:44,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:44,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:44,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:29:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:45,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:29:45,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-13 13:29:45,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:29:45,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843071970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:45,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:29:45,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-12-13 13:29:45,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061805380] [2022-12-13 13:29:45,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:45,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:29:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:29:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:45,169 INFO L87 Difference]: Start difference. First operand 998 states and 1398 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:29:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:45,239 INFO L93 Difference]: Finished difference Result 1912 states and 2701 transitions. [2022-12-13 13:29:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:29:45,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2022-12-13 13:29:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:45,242 INFO L225 Difference]: With dead ends: 1912 [2022-12-13 13:29:45,243 INFO L226 Difference]: Without dead ends: 954 [2022-12-13 13:29:45,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:29:45,245 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 34 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 581 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 13:29:45,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-12-13 13:29:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 873. [2022-12-13 13:29:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 600 states have (on average 1.1966666666666668) internal successors, (718), 618 states have internal predecessors, (718), 198 states have call successors, (198), 59 states have call predecessors, (198), 74 states have return successors, (281), 195 states have call predecessors, (281), 192 states have call successors, (281) [2022-12-13 13:29:45,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1197 transitions. [2022-12-13 13:29:45,339 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1197 transitions. Word has length 152 [2022-12-13 13:29:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:45,340 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1197 transitions. [2022-12-13 13:29:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 13:29:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1197 transitions. [2022-12-13 13:29:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 13:29:45,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:45,344 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:45,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:29:45,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:45,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1222277873, now seen corresponding path program 1 times [2022-12-13 13:29:45,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:45,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492510384] [2022-12-13 13:29:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:45,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:29:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:29:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:29:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:29:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:29:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:29:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:29:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 13:29:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 13:29:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 13:29:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-12-13 13:29:46,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492510384] [2022-12-13 13:29:46,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492510384] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:46,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339936836] [2022-12-13 13:29:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:46,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:46,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:46,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:29:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:46,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 13:29:46,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 13:29:46,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:29:46,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339936836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:46,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:29:46,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-12-13 13:29:46,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763265601] [2022-12-13 13:29:46,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:29:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:29:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:29:46,621 INFO L87 Difference]: Start difference. First operand 873 states and 1197 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:29:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:46,810 INFO L93 Difference]: Finished difference Result 1639 states and 2231 transitions. [2022-12-13 13:29:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:29:46,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2022-12-13 13:29:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:46,813 INFO L225 Difference]: With dead ends: 1639 [2022-12-13 13:29:46,814 INFO L226 Difference]: Without dead ends: 905 [2022-12-13 13:29:46,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:29:46,816 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:46,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1474 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:29:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-12-13 13:29:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 871. [2022-12-13 13:29:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 608 states have (on average 1.194078947368421) internal successors, (726), 628 states have internal predecessors, (726), 186 states have call successors, (186), 59 states have call predecessors, (186), 76 states have return successors, (272), 183 states have call predecessors, (272), 180 states have call successors, (272) [2022-12-13 13:29:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1184 transitions. [2022-12-13 13:29:46,875 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1184 transitions. Word has length 152 [2022-12-13 13:29:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:46,875 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1184 transitions. [2022-12-13 13:29:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 13:29:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1184 transitions. [2022-12-13 13:29:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 13:29:46,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:46,876 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2022-12-13 13:29:46,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:29:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:47,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1840941889, now seen corresponding path program 1 times [2022-12-13 13:29:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:47,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937244849] [2022-12-13 13:29:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:29:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:29:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:29:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:29:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:29:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:29:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 13:29:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 13:29:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 13:29:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 13:29:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 13:29:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-12-13 13:29:47,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937244849] [2022-12-13 13:29:47,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937244849] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953865361] [2022-12-13 13:29:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:47,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:47,365 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:47,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:29:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:47,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:29:47,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 13:29:47,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:29:47,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953865361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:47,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:29:47,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-12-13 13:29:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836583877] [2022-12-13 13:29:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:47,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:29:47,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:29:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:47,719 INFO L87 Difference]: Start difference. First operand 871 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 13:29:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:47,782 INFO L93 Difference]: Finished difference Result 1547 states and 2102 transitions. [2022-12-13 13:29:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:29:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2022-12-13 13:29:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:47,786 INFO L225 Difference]: With dead ends: 1547 [2022-12-13 13:29:47,786 INFO L226 Difference]: Without dead ends: 867 [2022-12-13 13:29:47,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:29:47,788 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 22 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:47,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 567 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-12-13 13:29:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 853. [2022-12-13 13:29:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 595 states have (on average 1.1714285714285715) internal successors, (697), 610 states have internal predecessors, (697), 186 states have call successors, (186), 59 states have call predecessors, (186), 71 states have return successors, (255), 183 states have call predecessors, (255), 180 states have call successors, (255) [2022-12-13 13:29:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1138 transitions. [2022-12-13 13:29:47,846 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1138 transitions. Word has length 154 [2022-12-13 13:29:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:47,846 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1138 transitions. [2022-12-13 13:29:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 13:29:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1138 transitions. [2022-12-13 13:29:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 13:29:47,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:47,849 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:47,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:29:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:29:48,049 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1740826565, now seen corresponding path program 2 times [2022-12-13 13:29:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:48,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684849159] [2022-12-13 13:29:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:29:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:29:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:29:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:29:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:29:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:29:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:29:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:29:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:29:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 13:29:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 13:29:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 13:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 13:29:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 13:29:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:29:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:29:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 13:29:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 13:29:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:48,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684849159] [2022-12-13 13:29:48,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684849159] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:48,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811552247] [2022-12-13 13:29:48,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:29:48,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:48,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:48,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:29:49,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:29:49,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:49,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 13:29:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:49,258 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:29:49,258 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 13:29:49,505 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 13:29:49,554 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-12-13 13:29:49,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-12-13 13:29:49,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-12-13 13:29:49,897 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 18 [2022-12-13 13:29:49,925 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:29:49,925 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 13:29:50,025 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 13:29:50,032 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2240 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2240))) is different from true [2022-12-13 13:29:50,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-13 13:30:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 130 proven. 47 refuted. 0 times theorem prover too weak. 18 trivial. 2 not checked. [2022-12-13 13:30:22,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:30:23,066 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2244 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#old_byte_from_lhs~0#1.base| v_ArrVal_2244) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.offset| 8)) 0))) is different from false [2022-12-13 13:30:23,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811552247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:30:23,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:30:23,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2022-12-13 13:30:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282589350] [2022-12-13 13:30:23,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:30:23,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 13:30:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 13:30:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1434, Unknown=7, NotChecked=154, Total=1722 [2022-12-13 13:30:23,068 INFO L87 Difference]: Start difference. First operand 853 states and 1138 transitions. Second operand has 34 states, 32 states have (on average 5.125) internal successors, (164), 29 states have internal predecessors, (164), 11 states have call successors, (41), 10 states have call predecessors, (41), 12 states have return successors, (40), 11 states have call predecessors, (40), 11 states have call successors, (40) [2022-12-13 13:30:28,519 WARN L539 Checker$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 13:30:30,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:34,640 WARN L539 Checker$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 13:30:36,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:38,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:42,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:44,997 WARN L539 Checker$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 13:30:47,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:55,062 WARN L539 Checker$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 13:30:57,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:30:59,079 WARN L539 Checker$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 13:31:01,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:09,151 WARN L539 Checker$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 13:31:11,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:19,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:21,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:23,228 WARN L539 Checker$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 13:31:28,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:34,022 WARN L539 Checker$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 13:31:36,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:39,711 WARN L539 Checker$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 13:31:41,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:49,803 WARN L539 Checker$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 13:31:51,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:31:59,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:02,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:04,063 WARN L539 Checker$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 13:32:06,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:08,091 WARN L539 Checker$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 13:32:16,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:18,220 WARN L539 Checker$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 13:32:21,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:23,072 WARN L539 Checker$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 13:32:25,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:31,650 WARN L539 Checker$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 13:32:44,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:47,751 WARN L539 Checker$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 13:32:49,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:51,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:53,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:56,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:32:58,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:00,495 WARN L539 Checker$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 13:33:02,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:04,535 WARN L539 Checker$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 13:33:06,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:08,795 WARN L539 Checker$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 13:33:11,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:13,301 WARN L539 Checker$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 13:33:15,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:18,892 WARN L539 Checker$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 13:33:20,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:23,034 WARN L539 Checker$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 13:33:25,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:33:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:33:26,010 INFO L93 Difference]: Finished difference Result 1863 states and 2473 transitions. [2022-12-13 13:33:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 13:33:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 5.125) internal successors, (164), 29 states have internal predecessors, (164), 11 states have call successors, (41), 10 states have call predecessors, (41), 12 states have return successors, (40), 11 states have call predecessors, (40), 11 states have call successors, (40) Word has length 158 [2022-12-13 13:33:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:33:26,014 INFO L225 Difference]: With dead ends: 1863 [2022-12-13 13:33:26,014 INFO L226 Difference]: Without dead ends: 1122 [2022-12-13 13:33:26,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 247 SyntacticMatches, 12 SemanticMatches, 82 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 95.2s TimeCoverageRelationStatistics Valid=751, Invalid=5838, Unknown=61, NotChecked=322, Total=6972 [2022-12-13 13:33:26,017 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 763 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 6138 mSolverCounterSat, 738 mSolverCounterUnsat, 59 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 7356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 6138 IncrementalHoareTripleChecker+Invalid, 59 IncrementalHoareTripleChecker+Unknown, 421 IncrementalHoareTripleChecker+Unchecked, 120.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:33:26,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1435 Invalid, 7356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 6138 Invalid, 59 Unknown, 421 Unchecked, 120.8s Time] [2022-12-13 13:33:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-12-13 13:33:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1013. [2022-12-13 13:33:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 708 states have (on average 1.1723163841807909) internal successors, (830), 726 states have internal predecessors, (830), 220 states have call successors, (220), 69 states have call predecessors, (220), 84 states have return successors, (293), 217 states have call predecessors, (293), 213 states have call successors, (293) [2022-12-13 13:33:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1343 transitions. [2022-12-13 13:33:26,097 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1343 transitions. Word has length 158 [2022-12-13 13:33:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:33:26,097 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1343 transitions. [2022-12-13 13:33:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 5.125) internal successors, (164), 29 states have internal predecessors, (164), 11 states have call successors, (41), 10 states have call predecessors, (41), 12 states have return successors, (40), 11 states have call predecessors, (40), 11 states have call successors, (40) [2022-12-13 13:33:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1343 transitions. [2022-12-13 13:33:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 13:33:26,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:33:26,098 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-12-13 13:33:26,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:33:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:33:26,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:33:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:33:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1057371548, now seen corresponding path program 2 times [2022-12-13 13:33:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:33:26,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334519448] [2022-12-13 13:33:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:33:26,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:33:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:33:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:33:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:33:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:33:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:33:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:33:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:33:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:33:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:33:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:33:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:33:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:33:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 13:33:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:33:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 13:33:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:33:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:33:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:33:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 13:33:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:33:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-12-13 13:33:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:33:28,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334519448] [2022-12-13 13:33:28,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334519448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:33:28,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518590970] [2022-12-13 13:33:28,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:33:28,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:33:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:33:28,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:33:28,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:33:29,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:33:29,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:33:29,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 13:33:29,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:33:29,223 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 13:33:29,273 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 22 treesize of output 25 [2022-12-13 13:33:29,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 13:33:31,390 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_2| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_13|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_13|)))) is different from true [2022-12-13 13:33:33,477 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_3| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_14|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_14|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_3|) 16)))) is different from true [2022-12-13 13:33:35,540 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_4| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_15|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_4|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_15|)))) is different from true [2022-12-13 13:33:46,126 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_5| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_5| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_5|) 16))))) is different from true [2022-12-13 13:33:48,239 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_6| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_6| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_6|) 16) .cse0)))) is different from true [2022-12-13 13:33:50,438 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_7| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_7| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_7|) 16))))) is different from true [2022-12-13 13:33:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 43 not checked. [2022-12-13 13:33:54,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:34:04,244 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 60 treesize of output 42 [2022-12-13 13:34:04,249 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 82 treesize of output 78 [2022-12-13 13:34:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-13 13:34:04,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518590970] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:34:04,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:34:04,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 13] total 49 [2022-12-13 13:34:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748497215] [2022-12-13 13:34:04,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:34:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 13:34:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:34:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 13:34:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1662, Unknown=10, NotChecked=522, Total=2352 [2022-12-13 13:34:04,366 INFO L87 Difference]: Start difference. First operand 1013 states and 1343 transitions. Second operand has 49 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 42 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-12-13 13:34:07,798 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 13:34:08,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:34:09,844 WARN L539 Checker$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 13:34:12,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:34:27,897 WARN L539 Checker$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 13:34:28,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:34:30,008 WARN L539 Checker$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 13:34:31,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:34:32,071 WARN L539 Checker$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 13:34:33,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:34:43,205 WARN L539 Checker$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 13:34:47,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:19,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:20,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:22,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:24,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:25,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:27,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:29,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:30,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:32,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:34,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:36,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:58,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:35:59,203 WARN L539 Checker$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 13:36:00,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:36:01,244 WARN L539 Checker$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 13:36:39,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:36:47,393 WARN L539 Checker$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 13:36:48,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:36:50,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:36:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:36:53,201 INFO L93 Difference]: Finished difference Result 2237 states and 3110 transitions. [2022-12-13 13:36:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 13:36:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 42 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) Word has length 154 [2022-12-13 13:36:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:36:53,207 INFO L225 Difference]: With dead ends: 2237 [2022-12-13 13:36:53,207 INFO L226 Difference]: Without dead ends: 1493 [2022-12-13 13:36:53,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 314 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 130.9s TimeCoverageRelationStatistics Valid=909, Invalid=6551, Unknown=46, NotChecked=1050, Total=8556 [2022-12-13 13:36:53,210 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 788 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 6942 mSolverCounterSat, 779 mSolverCounterUnsat, 62 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 10807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 6942 IncrementalHoareTripleChecker+Invalid, 62 IncrementalHoareTripleChecker+Unknown, 3024 IncrementalHoareTripleChecker+Unchecked, 71.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:36:53,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 911 Invalid, 10807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 6942 Invalid, 62 Unknown, 3024 Unchecked, 71.7s Time] [2022-12-13 13:36:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2022-12-13 13:36:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1106. [2022-12-13 13:36:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 788 states have (on average 1.1586294416243654) internal successors, (913), 805 states have internal predecessors, (913), 227 states have call successors, (227), 76 states have call predecessors, (227), 90 states have return successors, (300), 224 states have call predecessors, (300), 220 states have call successors, (300) [2022-12-13 13:36:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1440 transitions. [2022-12-13 13:36:53,314 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1440 transitions. Word has length 154 [2022-12-13 13:36:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:36:53,314 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1440 transitions. [2022-12-13 13:36:53,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 3.9148936170212765) internal successors, (184), 42 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-12-13 13:36:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1440 transitions. [2022-12-13 13:36:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 13:36:53,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:36:53,315 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-12-13 13:36:53,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 13:36:53,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:36:53,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:36:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:36:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -289190858, now seen corresponding path program 1 times [2022-12-13 13:36:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:36:53,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762039615] [2022-12-13 13:36:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:36:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:36:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:36:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:36:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:36:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:36:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:36:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:36:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:36:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:36:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:36:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:36:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:36:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:36:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:36:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:36:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:36:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:36:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:36:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:36:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:36:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 13:36:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-12-13 13:36:55,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:36:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762039615] [2022-12-13 13:36:55,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762039615] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:36:55,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491227461] [2022-12-13 13:36:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:36:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:36:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:36:55,695 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:36:55,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 13:36:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:36:56,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 13:36:56,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:36:56,084 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 13:36:56,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-13 13:36:56,508 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 13:36:56,509 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 37 treesize of output 17 [2022-12-13 13:36:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 141 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 13:36:56,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:36:56,769 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2633 (Array Int Int))) (<= 0 (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.base| v_ArrVal_2633) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.offset|))) (+ (* 18446744073709551616 (div (- .cse0) 18446744073709551616)) .cse0)))) is different from false [2022-12-13 13:36:56,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491227461] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:36:56,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:36:56,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 25 [2022-12-13 13:36:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336354300] [2022-12-13 13:36:56,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:36:56,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 13:36:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:36:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 13:36:56,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=631, Unknown=1, NotChecked=50, Total=756 [2022-12-13 13:36:56,776 INFO L87 Difference]: Start difference. First operand 1106 states and 1440 transitions. Second operand has 25 states, 23 states have (on average 5.695652173913044) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) [2022-12-13 13:37:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:37:02,263 INFO L93 Difference]: Finished difference Result 3441 states and 4730 transitions. [2022-12-13 13:37:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 13:37:02,264 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.695652173913044) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) Word has length 167 [2022-12-13 13:37:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:37:02,270 INFO L225 Difference]: With dead ends: 3441 [2022-12-13 13:37:02,270 INFO L226 Difference]: Without dead ends: 2483 [2022-12-13 13:37:02,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 310 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=432, Invalid=2877, Unknown=1, NotChecked=112, Total=3422 [2022-12-13 13:37:02,273 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 758 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 645 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:37:02,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1099 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 4344 Invalid, 42 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 13:37:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2022-12-13 13:37:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1763. [2022-12-13 13:37:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1279 states have (on average 1.1391712275215011) internal successors, (1457), 1311 states have internal predecessors, (1457), 347 states have call successors, (347), 109 states have call predecessors, (347), 136 states have return successors, (507), 342 states have call predecessors, (507), 338 states have call successors, (507) [2022-12-13 13:37:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2311 transitions. [2022-12-13 13:37:02,452 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2311 transitions. Word has length 167 [2022-12-13 13:37:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:37:02,452 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 2311 transitions. [2022-12-13 13:37:02,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.695652173913044) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (38), 8 states have call predecessors, (38), 10 states have call successors, (38) [2022-12-13 13:37:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2311 transitions. [2022-12-13 13:37:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 13:37:02,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:37:02,455 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-12-13 13:37:02,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 13:37:02,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:37:02,656 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:37:02,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2097654220, now seen corresponding path program 1 times [2022-12-13 13:37:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948275928] [2022-12-13 13:37:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:37:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:37:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:37:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:37:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:37:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:37:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:37:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:37:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:37:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:37:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:37:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:37:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:37:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:37:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 13:37:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:37:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:37:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:37:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:37:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:37:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 13:37:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 13:37:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948275928] [2022-12-13 13:37:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948275928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:37:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176002314] [2022-12-13 13:37:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:07,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:37:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:37:07,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:37:07,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 13:37:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:07,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 143 conjunts are in the unsatisfiable core [2022-12-13 13:37:07,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:37:07,457 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:37:07,457 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 19 treesize of output 18 [2022-12-13 13:37:07,802 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 13:37:07,886 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 13:37:07,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 13:37:09,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 13:37:09,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 13:37:09,496 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 13:37:09,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2022-12-13 13:37:09,664 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 13:37:09,666 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 13:37:09,674 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2887 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2887) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2888 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2888)))) is different from true [2022-12-13 13:37:09,683 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 13:37:09,686 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 13:37:09,918 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 13:37:09,920 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 13:37:09,928 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-12-13 13:37:09,931 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 13:37:09,936 WARN L859 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_2893 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_1) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_2893) |c_#memory_int|))) is different from true [2022-12-13 13:37:09,956 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:37:09,956 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 17 treesize of output 23 [2022-12-13 13:37:09,969 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:37:09,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-13 13:37:09,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 13:37:09,976 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 8 treesize of output 6 [2022-12-13 13:37:10,478 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 9 treesize of output 5 [2022-12-13 13:37:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 77 proven. 117 refuted. 0 times theorem prover too weak. 38 trivial. 2 not checked. [2022-12-13 13:37:12,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:37:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-12-13 13:37:13,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176002314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:37:13,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:37:13,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 42, 13] total 75 [2022-12-13 13:37:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601974865] [2022-12-13 13:37:13,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:37:13,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-13 13:37:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-13 13:37:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=4958, Unknown=6, NotChecked=286, Total=5550 [2022-12-13 13:37:13,548 INFO L87 Difference]: Start difference. First operand 1763 states and 2311 transitions. Second operand has 75 states, 66 states have (on average 3.257575757575758) internal successors, (215), 65 states have internal predecessors, (215), 25 states have call successors, (61), 11 states have call predecessors, (61), 18 states have return successors, (60), 23 states have call predecessors, (60), 25 states have call successors, (60) [2022-12-13 13:37:15,994 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 13:38:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:05,523 INFO L93 Difference]: Finished difference Result 5057 states and 6551 transitions. [2022-12-13 13:38:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-12-13 13:38:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 66 states have (on average 3.257575757575758) internal successors, (215), 65 states have internal predecessors, (215), 25 states have call successors, (61), 11 states have call predecessors, (61), 18 states have return successors, (60), 23 states have call predecessors, (60), 25 states have call successors, (60) Word has length 167 [2022-12-13 13:38:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:05,532 INFO L225 Difference]: With dead ends: 5057 [2022-12-13 13:38:05,532 INFO L226 Difference]: Without dead ends: 3930 [2022-12-13 13:38:05,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 351 SyntacticMatches, 15 SemanticMatches, 236 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 17780 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=6055, Invalid=49395, Unknown=18, NotChecked=938, Total=56406 [2022-12-13 13:38:05,540 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 2210 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 20688 mSolverCounterSat, 2055 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2210 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 24260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2055 IncrementalHoareTripleChecker+Valid, 20688 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 1476 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:05,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2210 Valid, 1876 Invalid, 24260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2055 Valid, 20688 Invalid, 41 Unknown, 1476 Unchecked, 27.3s Time] [2022-12-13 13:38:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2022-12-13 13:38:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3297. [2022-12-13 13:38:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2435 states have (on average 1.1478439425051334) internal successors, (2795), 2498 states have internal predecessors, (2795), 602 states have call successors, (602), 201 states have call predecessors, (602), 259 states have return successors, (839), 597 states have call predecessors, (839), 582 states have call successors, (839) [2022-12-13 13:38:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4236 transitions. [2022-12-13 13:38:05,923 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4236 transitions. Word has length 167 [2022-12-13 13:38:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:05,923 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 4236 transitions. [2022-12-13 13:38:05,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 66 states have (on average 3.257575757575758) internal successors, (215), 65 states have internal predecessors, (215), 25 states have call successors, (61), 11 states have call predecessors, (61), 18 states have return successors, (60), 23 states have call predecessors, (60), 25 states have call successors, (60) [2022-12-13 13:38:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4236 transitions. [2022-12-13 13:38:05,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-13 13:38:05,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:05,926 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:05,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 13:38:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:38:06,127 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash -91883708, now seen corresponding path program 1 times [2022-12-13 13:38:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218442090] [2022-12-13 13:38:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:38:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:38:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:38:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:38:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:38:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:38:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:38:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:38:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:38:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 13:38:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:38:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:38:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:38:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 13:38:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-12-13 13:38:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218442090] [2022-12-13 13:38:07,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218442090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:07,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:07,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 13:38:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659460615] [2022-12-13 13:38:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:07,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:38:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:07,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:38:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:38:07,357 INFO L87 Difference]: Start difference. First operand 3297 states and 4236 transitions. Second operand has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-13 13:38:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:09,174 INFO L93 Difference]: Finished difference Result 6388 states and 8368 transitions. [2022-12-13 13:38:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:38:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2022-12-13 13:38:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:09,184 INFO L225 Difference]: With dead ends: 6388 [2022-12-13 13:38:09,184 INFO L226 Difference]: Without dead ends: 3932 [2022-12-13 13:38:09,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:38:09,188 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 214 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:09,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 510 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 13:38:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-12-13 13:38:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3405. [2022-12-13 13:38:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 2512 states have (on average 1.140923566878981) internal successors, (2866), 2591 states have internal predecessors, (2866), 617 states have call successors, (617), 201 states have call predecessors, (617), 275 states have return successors, (909), 612 states have call predecessors, (909), 597 states have call successors, (909) [2022-12-13 13:38:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 4392 transitions. [2022-12-13 13:38:09,568 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 4392 transitions. Word has length 168 [2022-12-13 13:38:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:09,569 INFO L495 AbstractCegarLoop]: Abstraction has 3405 states and 4392 transitions. [2022-12-13 13:38:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-13 13:38:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 4392 transitions. [2022-12-13 13:38:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 13:38:09,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:09,571 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:38:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:38:09,571 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash -530779661, now seen corresponding path program 1 times [2022-12-13 13:38:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129581850] [2022-12-13 13:38:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:38:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:38:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:38:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:38:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:38:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:38:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:38:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:38:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:38:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 13:38:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:38:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 13:38:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:38:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 13:38:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:38:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:10,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129581850] [2022-12-13 13:38:10,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129581850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:10,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:10,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:38:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311802885] [2022-12-13 13:38:10,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:38:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:10,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:38:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:38:10,264 INFO L87 Difference]: Start difference. First operand 3405 states and 4392 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 13:38:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:11,252 INFO L93 Difference]: Finished difference Result 6264 states and 8134 transitions. [2022-12-13 13:38:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:38:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2022-12-13 13:38:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:11,261 INFO L225 Difference]: With dead ends: 6264 [2022-12-13 13:38:11,261 INFO L226 Difference]: Without dead ends: 3386 [2022-12-13 13:38:11,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:38:11,266 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 264 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:11,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 362 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:38:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-12-13 13:38:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3263. [2022-12-13 13:38:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2386 states have (on average 1.126571668063705) internal successors, (2688), 2453 states have internal predecessors, (2688), 614 states have call successors, (614), 200 states have call predecessors, (614), 262 states have return successors, (859), 609 states have call predecessors, (859), 594 states have call successors, (859) [2022-12-13 13:38:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4161 transitions. [2022-12-13 13:38:11,643 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4161 transitions. Word has length 162 [2022-12-13 13:38:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:11,643 INFO L495 AbstractCegarLoop]: Abstraction has 3263 states and 4161 transitions. [2022-12-13 13:38:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 13:38:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4161 transitions. [2022-12-13 13:38:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 13:38:11,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:11,645 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:38:11,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 13:38:11,646 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1648665527, now seen corresponding path program 1 times [2022-12-13 13:38:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:11,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052663938] [2022-12-13 13:38:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:11,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:38:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:38:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:38:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:38:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:38:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:38:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:38:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:38:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:38:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 13:38:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:38:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 13:38:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:38:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 13:38:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-12-13 13:38:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:12,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052663938] [2022-12-13 13:38:12,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052663938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:12,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:12,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 13:38:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954653472] [2022-12-13 13:38:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:38:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:38:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:38:12,341 INFO L87 Difference]: Start difference. First operand 3263 states and 4161 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 13:38:13,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:13,519 INFO L93 Difference]: Finished difference Result 3408 states and 4322 transitions. [2022-12-13 13:38:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:38:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 170 [2022-12-13 13:38:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:13,528 INFO L225 Difference]: With dead ends: 3408 [2022-12-13 13:38:13,528 INFO L226 Difference]: Without dead ends: 3406 [2022-12-13 13:38:13,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-12-13 13:38:13,529 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 202 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:13,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 739 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:38:13,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-12-13 13:38:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3307. [2022-12-13 13:38:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2418 states have (on average 1.1248966087675765) internal successors, (2720), 2486 states have internal predecessors, (2720), 616 states have call successors, (616), 209 states have call predecessors, (616), 272 states have return successors, (867), 611 states have call predecessors, (867), 596 states have call successors, (867) [2022-12-13 13:38:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4203 transitions. [2022-12-13 13:38:13,887 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4203 transitions. Word has length 170 [2022-12-13 13:38:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:13,888 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 4203 transitions. [2022-12-13 13:38:13,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-12-13 13:38:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4203 transitions. [2022-12-13 13:38:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-13 13:38:13,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:13,890 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:38:13,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 13:38:13,890 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1790044429, now seen corresponding path program 1 times [2022-12-13 13:38:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:13,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702093691] [2022-12-13 13:38:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:13,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:38:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:38:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:38:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:38:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:38:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:38:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:38:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:38:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:38:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:38:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:38:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:38:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:38:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 13:38:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 13:38:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-12-13 13:38:18,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:18,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702093691] [2022-12-13 13:38:18,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702093691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:38:18,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:38:18,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-13 13:38:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471614036] [2022-12-13 13:38:18,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:38:18,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 13:38:18,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 13:38:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-13 13:38:18,836 INFO L87 Difference]: Start difference. First operand 3307 states and 4203 transitions. Second operand has 21 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 10 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-12-13 13:38:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:21,021 INFO L93 Difference]: Finished difference Result 3651 states and 4625 transitions. [2022-12-13 13:38:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:38:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 10 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 173 [2022-12-13 13:38:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:21,035 INFO L225 Difference]: With dead ends: 3651 [2022-12-13 13:38:21,035 INFO L226 Difference]: Without dead ends: 3323 [2022-12-13 13:38:21,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-12-13 13:38:21,039 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 266 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:21,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 427 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 13:38:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2022-12-13 13:38:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3307. [2022-12-13 13:38:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2418 states have (on average 1.1240694789081886) internal successors, (2718), 2486 states have internal predecessors, (2718), 616 states have call successors, (616), 209 states have call predecessors, (616), 272 states have return successors, (867), 611 states have call predecessors, (867), 596 states have call successors, (867) [2022-12-13 13:38:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4201 transitions. [2022-12-13 13:38:21,408 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4201 transitions. Word has length 173 [2022-12-13 13:38:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:21,409 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 4201 transitions. [2022-12-13 13:38:21,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 10 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-12-13 13:38:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4201 transitions. [2022-12-13 13:38:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 13:38:21,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:21,411 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:38:21,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 13:38:21,411 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2045113158, now seen corresponding path program 1 times [2022-12-13 13:38:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:21,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994682496] [2022-12-13 13:38:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:38:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:38:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:38:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:38:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:38:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:38:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:38:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 13:38:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 13:38:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 13:38:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 13:38:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 13:38:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 13:38:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:38:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:38:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 13:38:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 13:38:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:38:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994682496] [2022-12-13 13:38:22,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994682496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:38:22,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132246517] [2022-12-13 13:38:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:22,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:38:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:38:22,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:38:22,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 13:38:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:38:23,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 13:38:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:38:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:38:23,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:38:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:38:23,442 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 13:38:23,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-12-13 13:38:24,186 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:38:24,186 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 40 treesize of output 19 [2022-12-13 13:38:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 80 proven. 56 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 13:38:24,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:38:24,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 18 [2022-12-13 13:38:25,013 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-12-13 13:38:25,013 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 13:38:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 13:38:25,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132246517] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:38:25,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:38:25,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 13] total 32 [2022-12-13 13:38:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121490223] [2022-12-13 13:38:25,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:38:25,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 13:38:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:38:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 13:38:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2022-12-13 13:38:25,065 INFO L87 Difference]: Start difference. First operand 3307 states and 4201 transitions. Second operand has 32 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 17 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (46), 13 states have call predecessors, (46), 17 states have call successors, (46) [2022-12-13 13:38:27,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:38:29,727 WARN L539 Checker$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 13:38:31,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:38:34,679 WARN L539 Checker$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 13:38:36,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:38:39,286 WARN L539 Checker$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 13:38:41,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:38:44,101 WARN L539 Checker$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 13:38:46,121 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 13:38:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:38:55,807 INFO L93 Difference]: Finished difference Result 8059 states and 10562 transitions. [2022-12-13 13:38:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-13 13:38:55,807 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 17 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (46), 13 states have call predecessors, (46), 17 states have call successors, (46) Word has length 162 [2022-12-13 13:38:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:38:55,820 INFO L225 Difference]: With dead ends: 8059 [2022-12-13 13:38:55,820 INFO L226 Difference]: Without dead ends: 5933 [2022-12-13 13:38:55,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 344 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=740, Invalid=5736, Unknown=4, NotChecked=0, Total=6480 [2022-12-13 13:38:55,825 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 563 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 9280 mSolverCounterSat, 829 mSolverCounterUnsat, 109 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 10218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 9280 IncrementalHoareTripleChecker+Invalid, 109 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:38:55,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 2947 Invalid, 10218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 9280 Invalid, 109 Unknown, 0 Unchecked, 27.0s Time] [2022-12-13 13:38:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-12-13 13:38:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 4037. [2022-12-13 13:38:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 3005 states have (on average 1.130116472545757) internal successors, (3396), 3086 states have internal predecessors, (3396), 709 states have call successors, (709), 246 states have call predecessors, (709), 322 states have return successors, (933), 704 states have call predecessors, (933), 683 states have call successors, (933) [2022-12-13 13:38:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 5038 transitions. [2022-12-13 13:38:56,350 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 5038 transitions. Word has length 162 [2022-12-13 13:38:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:38:56,351 INFO L495 AbstractCegarLoop]: Abstraction has 4037 states and 5038 transitions. [2022-12-13 13:38:56,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 17 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (46), 13 states have call predecessors, (46), 17 states have call successors, (46) [2022-12-13 13:38:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 5038 transitions. [2022-12-13 13:38:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 13:38:56,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:38:56,353 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-12-13 13:38:56,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 13:38:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 13:38:56,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:38:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:38:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2048010158, now seen corresponding path program 1 times [2022-12-13 13:38:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:38:56,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647714353] [2022-12-13 13:38:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:38:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:38:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 13:39:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:39:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 13:39:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:39:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 13:39:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:39:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 13:39:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 13:39:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 13:39:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 13:39:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:39:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 13:39:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 13:39:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 13:39:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 13:39:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 13:39:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 13:39:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 13:39:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 13:39:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 13:39:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 13:39:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 35 proven. 45 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-12-13 13:39:05,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:39:05,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647714353] [2022-12-13 13:39:05,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647714353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:39:05,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426598536] [2022-12-13 13:39:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:39:05,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:39:05,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:39:05,820 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:39:05,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae7aa9d3-4231-42ef-a454-03411c46849c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 13:39:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:39:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 201 conjunts are in the unsatisfiable core [2022-12-13 13:39:06,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:39:06,392 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 13:39:06,556 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 13:39:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:19,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:19,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:19,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:19,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 58 [2022-12-13 13:39:20,013 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:39:20,013 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 13:39:22,543 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 11 treesize of output 7 [2022-12-13 13:39:24,997 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_harness_~#old_byte_from_lhs~0#1.base_BEFORE_CALL_6| Int)) (= (select |c_#valid| |v_ULTIMATE.start_aws_byte_buf_eq_harness_~#old_byte_from_lhs~0#1.base_BEFORE_CALL_6|) 1)) (exists ((v_ArrVal_3902 Int) (aux_div_v_ArrVal_3900_40 Int) (aux_mod_v_ArrVal_3900_40 Int)) (and (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| (store (store (select |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| (+ aux_mod_v_ArrVal_3900_40 (* 18446744073709551616 aux_div_v_ArrVal_3900_40))) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_3902)) |c_#memory_int|) (<= 0 aux_mod_v_ArrVal_3900_40) (< aux_mod_v_ArrVal_3900_40 (mod |c_save_byte_from_array_#in~size#1| 18446744073709551616))))) is different from true [2022-12-13 13:39:25,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:25,052 INFO L321 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2022-12-13 13:39:25,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 65 [2022-12-13 13:39:26,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:39:26,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 233 treesize of output 265 [2022-12-13 13:39:30,665 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 13:39:32,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_ArrVal_3906_40 Int) (aux_mod_v_ArrVal_3906_40 Int) (v_ArrVal_3908 Int)) (and (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| (store (store (select |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| (+ (* 18446744073709551616 aux_div_v_ArrVal_3906_40) aux_mod_v_ArrVal_3906_40)) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_3908)) |c_#memory_int|) (< aux_mod_v_ArrVal_3906_40 (mod |c_save_byte_from_array_#in~size#1| 18446744073709551616)) (<= 0 aux_mod_v_ArrVal_3906_40))) is different from true [2022-12-13 13:39:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:33,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:39:33,234 INFO L321 Elim1Store]: treesize reduction 48, result has 51.0 percent of original size [2022-12-13 13:39:33,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 248 treesize of output 199 [2022-12-13 13:40:25,630 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:41:05,679 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:41:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 118 proven. 91 refuted. 8 times theorem prover too weak. 31 trivial. 2 not checked. [2022-12-13 13:41:53,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:41:56,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426598536] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:41:56,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:41:56,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 50] total 87 [2022-12-13 13:41:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682353678] [2022-12-13 13:41:56,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:41:56,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-12-13 13:41:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:41:56,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-12-13 13:41:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=9033, Unknown=28, NotChecked=386, Total=9900 [2022-12-13 13:41:56,052 INFO L87 Difference]: Start difference. First operand 4037 states and 5038 transitions. Second operand has 87 states, 74 states have (on average 2.5675675675675675) internal successors, (190), 72 states have internal predecessors, (190), 28 states have call successors, (43), 11 states have call predecessors, (43), 18 states have return successors, (42), 24 states have call predecessors, (42), 27 states have call successors, (42) [2022-12-13 13:42:02,369 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 118 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:42:05,490 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 13:42:07,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:42:10,721 WARN L539 Checker$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 13:42:13,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:42:17,385 WARN L539 Checker$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 13:42:19,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 13:42:23,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]