./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8 --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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- 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-e04fb08 [2022-11-16 12:02:55,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:02:55,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:02:55,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:02:55,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:02:55,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:02:55,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:02:55,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:02:55,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:02:55,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:02:55,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:02:55,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:02:55,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:02:55,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:02:55,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:02:55,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:02:55,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:02:55,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:02:55,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:02:55,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:02:55,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:02:55,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:02:55,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:02:55,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:02:55,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:02:55,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:02:55,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:02:55,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:02:55,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:02:55,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:02:55,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:02:55,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:02:55,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:02:55,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:02:55,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:02:55,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:02:55,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:02:55,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:02:55,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:02:55,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:02:55,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:02:55,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:02:55,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:02:55,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:02:55,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:02:55,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:02:55,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:02:55,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:02:55,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:02:55,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:02:55,690 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:02:55,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:02:55,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:02:55,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:02:55,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:02:55,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:02:55,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:02:55,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:02:55,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:02:55,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:02:55,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:02:55,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:02:55,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:02:55,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:02:55,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:02:55,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:02:55,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:02:55,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:02:55,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:02:55,696 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:02:55,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:02:55,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:02:55,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2022-11-16 12:02:56,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:02:56,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:02:56,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:02:56,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:02:56,039 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:02:56,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-16 12:02:56,115 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/data/60578e4a1/748cd6ae25404c07a338fb7b5f49e261/FLAG961bca8c7 [2022-11-16 12:02:57,084 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:02:57,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-16 12:02:57,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/data/60578e4a1/748cd6ae25404c07a338fb7b5f49e261/FLAG961bca8c7 [2022-11-16 12:02:57,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/data/60578e4a1/748cd6ae25404c07a338fb7b5f49e261 [2022-11-16 12:02:57,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:02:57,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:02:57,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:02:57,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:02:57,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:02:57,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:57" (1/1) ... [2022-11-16 12:02:57,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe3b028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:57, skipping insertion in model container [2022-11-16 12:02:57,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:57" (1/1) ... [2022-11-16 12:02:57,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:02:57,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:02:57,993 WARN L229 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_14db3202-b6bc-4054-a355-1be79956ba71/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-16 12:02:58,002 WARN L229 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_14db3202-b6bc-4054-a355-1be79956ba71/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-16 12:02:59,000 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,001 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,001 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,002 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,004 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,020 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,021 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,023 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,024 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,026 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,027 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,028 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,029 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,444 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:02:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:02:59,447 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:02:59,449 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:02:59,451 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:02:59,452 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:02:59,453 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:02:59,454 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:02:59,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:02:59,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:02:59,623 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:02:59,653 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,660 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,783 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,783 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,784 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,784 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,784 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,785 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,786 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,786 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,787 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,787 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,787 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,788 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,788 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,807 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,808 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,808 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,809 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,812 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,813 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,821 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,822 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,826 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,869 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,870 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,871 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:02:59,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:02:59,901 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:02:59,920 WARN L229 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_14db3202-b6bc-4054-a355-1be79956ba71/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-16 12:02:59,921 WARN L229 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_14db3202-b6bc-4054-a355-1be79956ba71/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-16 12:03:00,007 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,016 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,017 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,018 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,018 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,038 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,039 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,041 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,041 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,042 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,043 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,044 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,044 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,097 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:03:00,098 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:03:00,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:03:00,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:03:00,104 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:03:00,104 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:03:00,106 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:03:00,107 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:03:00,108 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:03:00,108 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:03:00,157 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:03:00,191 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,201 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,249 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,249 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,250 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,250 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,250 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,251 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,251 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,252 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,252 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,253 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,253 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,253 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,254 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,255 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,255 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,255 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,256 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,258 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,259 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,265 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,266 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,267 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,273 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,274 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,274 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:03:00,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:03:00,536 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:03:00,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00 WrapperNode [2022-11-16 12:03:00,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:03:00,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:00,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:03:00,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:03:00,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,767 INFO L138 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2022-11-16 12:03:00,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:03:00,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:03:00,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:03:00,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:03:00,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:03:00,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:03:00,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:03:00,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:03:00,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (1/1) ... [2022-11-16 12:03:00,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:03:00,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:01,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:03:01,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:03:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-16 12:03:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-16 12:03:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 12:03:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 12:03:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:03:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:03:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:03:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:03:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:03:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:03:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:03:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-16 12:03:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-16 12:03:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 12:03:01,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:03:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:03:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:03:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:03:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:03:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-16 12:03:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-16 12:03:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:03:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:03:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:03:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-16 12:03:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-16 12:03:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 12:03:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 12:03:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:03:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:03:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:03:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:03:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:03:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:03:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 12:03:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 12:03:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 12:03:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 12:03:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 12:03:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:03:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:03:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 12:03:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 12:03:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:03:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:03:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 12:03:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 12:03:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-16 12:03:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-16 12:03:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:03:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:03:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:03:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-16 12:03:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-16 12:03:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:03:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:03:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:03:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:03:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:03:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:03:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:03:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:03:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:03:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:03:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:03:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:03:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-16 12:03:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-16 12:03:01,611 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:03:01,613 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:03:03,970 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:03:03,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:03:03,981 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 12:03:03,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:03 BoogieIcfgContainer [2022-11-16 12:03:03,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:03:03,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:03:03,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:03:03,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:03:03,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:02:57" (1/3) ... [2022-11-16 12:03:03,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d9840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:03, skipping insertion in model container [2022-11-16 12:03:03,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:03:00" (2/3) ... [2022-11-16 12:03:03,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d9840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:03:03, skipping insertion in model container [2022-11-16 12:03:03,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:03:03" (3/3) ... [2022-11-16 12:03:03,994 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2022-11-16 12:03:04,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:03:04,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:03:04,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:03:04,115 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;@16ec912e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:03:04,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:03:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 267 states have internal predecessors, (331), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-11-16 12:03:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:03:04,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:04,162 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:04,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:04,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1932124763, now seen corresponding path program 1 times [2022-11-16 12:03:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:04,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051383229] [2022-11-16 12:03:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:03:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:03:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:03:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:03:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:03:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:03:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 12:03:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 12:03:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 12:03:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 12:03:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 12:03:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 12:03:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:03:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 12:03:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-16 12:03:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:05,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051383229] [2022-11-16 12:03:05,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051383229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:05,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:05,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:03:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352587757] [2022-11-16 12:03:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:05,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:03:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:03:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:03:05,612 INFO L87 Difference]: Start difference. First operand has 452 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 267 states have internal predecessors, (331), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-16 12:03:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:11,067 INFO L93 Difference]: Finished difference Result 1325 states and 2472 transitions. [2022-11-16 12:03:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:03:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 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 141 [2022-11-16 12:03:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:11,095 INFO L225 Difference]: With dead ends: 1325 [2022-11-16 12:03:11,095 INFO L226 Difference]: Without dead ends: 879 [2022-11-16 12:03:11,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:11,110 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 530 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:11,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1714 Invalid, 2093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [677 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 12:03:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-11-16 12:03:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 445. [2022-11-16 12:03:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 260 states have internal predecessors, (315), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-11-16 12:03:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 633 transitions. [2022-11-16 12:03:11,296 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 633 transitions. Word has length 141 [2022-11-16 12:03:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 633 transitions. [2022-11-16 12:03:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-16 12:03:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 633 transitions. [2022-11-16 12:03:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:03:11,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:11,316 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:11,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:03:11,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2121876974, now seen corresponding path program 1 times [2022-11-16 12:03:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:11,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069050129] [2022-11-16 12:03:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:03:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:03:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:03:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:03:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:03:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:03:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 12:03:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 12:03:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 12:03:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 12:03:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 12:03:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-16 12:03:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:03:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 12:03:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 12:03:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:03:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-16 12:03:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-16 12:03:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:12,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069050129] [2022-11-16 12:03:12,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069050129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:12,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620685485] [2022-11-16 12:03:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:12,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:12,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:12,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:03:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:13,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:03:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-16 12:03:13,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:13,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620685485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:13,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:03:13,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 12:03:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5819898] [2022-11-16 12:03:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:13,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:03:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:03:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:03:13,402 INFO L87 Difference]: Start difference. First operand 445 states and 633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-16 12:03:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:15,590 INFO L93 Difference]: Finished difference Result 856 states and 1235 transitions. [2022-11-16 12:03:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:03:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2022-11-16 12:03:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:15,596 INFO L225 Difference]: With dead ends: 856 [2022-11-16 12:03:15,596 INFO L226 Difference]: Without dead ends: 447 [2022-11-16 12:03:15,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:03:15,600 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 653 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 2184 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 12:03:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-16 12:03:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-11-16 12:03:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 258 states have (on average 1.2248062015503876) internal successors, (316), 262 states have internal predecessors, (316), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2022-11-16 12:03:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 647 transitions. [2022-11-16 12:03:15,677 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 647 transitions. Word has length 156 [2022-11-16 12:03:15,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:15,679 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 647 transitions. [2022-11-16 12:03:15,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-16 12:03:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 647 transitions. [2022-11-16 12:03:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-16 12:03:15,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:15,683 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:15,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:15,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:15,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:15,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash 993285582, now seen corresponding path program 1 times [2022-11-16 12:03:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:15,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034867031] [2022-11-16 12:03:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:03:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:03:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:03:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:03:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:03:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:03:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:03:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:03:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:03:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:03:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:03:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:03:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 12:03:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 12:03:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 12:03:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 12:03:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-16 12:03:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 12:03:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-16 12:03:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 12:03:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 12:03:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 12:03:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-16 12:03:16,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:16,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034867031] [2022-11-16 12:03:16,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034867031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:03:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279616349] [2022-11-16 12:03:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:16,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:16,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:16,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:16,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:03:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2554 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:03:17,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-16 12:03:17,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:17,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279616349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:17,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:03:17,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-16 12:03:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705650139] [2022-11-16 12:03:17,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:17,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:03:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:17,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:03:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:03:17,821 INFO L87 Difference]: Start difference. First operand 447 states and 647 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-16 12:03:19,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:21,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:22,357 INFO L93 Difference]: Finished difference Result 879 states and 1306 transitions. [2022-11-16 12:03:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:03:22,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2022-11-16 12:03:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:22,363 INFO L225 Difference]: With dead ends: 879 [2022-11-16 12:03:22,363 INFO L226 Difference]: Without dead ends: 468 [2022-11-16 12:03:22,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:03:22,368 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 679 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:22,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 3222 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 12:03:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-16 12:03:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 466. [2022-11-16 12:03:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-16 12:03:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-16 12:03:22,413 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 164 [2022-11-16 12:03:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:22,414 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-16 12:03:22,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-16 12:03:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-16 12:03:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-16 12:03:22,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:22,419 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:22,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:22,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:22,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:22,629 INFO L85 PathProgramCache]: Analyzing trace with hash -420435888, now seen corresponding path program 1 times [2022-11-16 12:03:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:22,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744465828] [2022-11-16 12:03:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:22,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:22,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:22,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673957145] [2022-11-16 12:03:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:22,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:22,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:22,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:03:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:23,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:03:23,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-16 12:03:23,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:23,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:23,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744465828] [2022-11-16 12:03:23,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:23,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673957145] [2022-11-16 12:03:23,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673957145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:23,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:23,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:03:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898498383] [2022-11-16 12:03:23,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:23,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:03:23,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:03:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:23,724 INFO L87 Difference]: Start difference. First operand 466 states and 690 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:03:25,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:26,746 INFO L93 Difference]: Finished difference Result 904 states and 1379 transitions. [2022-11-16 12:03:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:03:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2022-11-16 12:03:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:26,754 INFO L225 Difference]: With dead ends: 904 [2022-11-16 12:03:26,754 INFO L226 Difference]: Without dead ends: 474 [2022-11-16 12:03:26,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:03:26,759 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 677 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:26,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2689 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 12:03:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-11-16 12:03:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 466. [2022-11-16 12:03:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-16 12:03:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-16 12:03:26,796 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 179 [2022-11-16 12:03:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:26,796 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-16 12:03:26,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-16 12:03:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-16 12:03:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-16 12:03:26,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:26,800 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:26,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:27,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:27,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2131846081, now seen corresponding path program 1 times [2022-11-16 12:03:27,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:27,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083671070] [2022-11-16 12:03:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:27,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:27,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82412369] [2022-11-16 12:03:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:27,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:27,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:27,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:27,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:03:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:03:27,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-16 12:03:28,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083671070] [2022-11-16 12:03:28,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82412369] [2022-11-16 12:03:28,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82412369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:28,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:28,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:03:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620104305] [2022-11-16 12:03:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:28,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:03:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:03:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:03:28,049 INFO L87 Difference]: Start difference. First operand 466 states and 690 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-16 12:03:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:32,771 INFO L93 Difference]: Finished difference Result 914 states and 1383 transitions. [2022-11-16 12:03:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:03:32,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2022-11-16 12:03:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:32,780 INFO L225 Difference]: With dead ends: 914 [2022-11-16 12:03:32,780 INFO L226 Difference]: Without dead ends: 484 [2022-11-16 12:03:32,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:03:32,784 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 742 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:32,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 3622 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:03:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-16 12:03:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2022-11-16 12:03:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-16 12:03:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 690 transitions. [2022-11-16 12:03:32,822 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 690 transitions. Word has length 195 [2022-11-16 12:03:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:32,823 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 690 transitions. [2022-11-16 12:03:32,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-16 12:03:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 690 transitions. [2022-11-16 12:03:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-16 12:03:32,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:32,828 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:32,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:33,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1941826145, now seen corresponding path program 2 times [2022-11-16 12:03:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:33,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871022019] [2022-11-16 12:03:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:33,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:33,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136093005] [2022-11-16 12:03:33,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:03:33,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:33,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:33,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:33,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:03:34,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:03:34,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:03:34,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2908 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:03:34,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-16 12:03:34,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:34,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871022019] [2022-11-16 12:03:34,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:34,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136093005] [2022-11-16 12:03:34,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136093005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:34,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:34,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:03:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703128567] [2022-11-16 12:03:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:34,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:03:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:03:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:34,221 INFO L87 Difference]: Start difference. First operand 466 states and 690 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:03:36,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:37,238 INFO L93 Difference]: Finished difference Result 862 states and 1297 transitions. [2022-11-16 12:03:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:03:37,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2022-11-16 12:03:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:37,245 INFO L225 Difference]: With dead ends: 862 [2022-11-16 12:03:37,245 INFO L226 Difference]: Without dead ends: 468 [2022-11-16 12:03:37,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:03:37,252 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 670 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:37,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 2711 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 12:03:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-16 12:03:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2022-11-16 12:03:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 275 states have (on average 1.2327272727272727) internal successors, (339), 280 states have internal predecessors, (339), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-11-16 12:03:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 702 transitions. [2022-11-16 12:03:37,291 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 702 transitions. Word has length 210 [2022-11-16 12:03:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:37,293 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 702 transitions. [2022-11-16 12:03:37,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:03:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 702 transitions. [2022-11-16 12:03:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-16 12:03:37,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:37,298 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:37,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:03:37,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1068968295, now seen corresponding path program 1 times [2022-11-16 12:03:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:37,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894731861] [2022-11-16 12:03:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:37,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:37,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290239639] [2022-11-16 12:03:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:37,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:37,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:37,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:03:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:38,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3099 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:03:38,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-16 12:03:38,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:38,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894731861] [2022-11-16 12:03:38,771 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290239639] [2022-11-16 12:03:38,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290239639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:38,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:38,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:03:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999877754] [2022-11-16 12:03:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:38,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:03:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:03:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:03:38,775 INFO L87 Difference]: Start difference. First operand 468 states and 702 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-16 12:03:40,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:43,103 INFO L93 Difference]: Finished difference Result 867 states and 1322 transitions. [2022-11-16 12:03:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:03:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2022-11-16 12:03:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:43,109 INFO L225 Difference]: With dead ends: 867 [2022-11-16 12:03:43,110 INFO L226 Difference]: Without dead ends: 471 [2022-11-16 12:03:43,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:03:43,114 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 694 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:43,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 3204 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:03:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-16 12:03:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2022-11-16 12:03:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 276 states have (on average 1.2318840579710144) internal successors, (340), 281 states have internal predecessors, (340), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2022-11-16 12:03:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 703 transitions. [2022-11-16 12:03:43,150 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 703 transitions. Word has length 233 [2022-11-16 12:03:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:43,150 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 703 transitions. [2022-11-16 12:03:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-16 12:03:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 703 transitions. [2022-11-16 12:03:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 12:03:43,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:43,155 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:43,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:43,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:43,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1882469810, now seen corresponding path program 1 times [2022-11-16 12:03:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:43,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969624709] [2022-11-16 12:03:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:43,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:43,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:43,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287088025] [2022-11-16 12:03:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:43,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:43,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:43,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:03:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:44,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:03:44,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-16 12:03:44,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 12:03:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969624709] [2022-11-16 12:03:45,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287088025] [2022-11-16 12:03:45,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287088025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:03:45,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:03:45,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-16 12:03:45,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378717575] [2022-11-16 12:03:45,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:03:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:03:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:03:45,142 INFO L87 Difference]: Start difference. First operand 469 states and 703 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-11-16 12:03:49,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:50,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:51,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:53,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:54,405 INFO L93 Difference]: Finished difference Result 885 states and 1356 transitions. [2022-11-16 12:03:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:03:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) Word has length 234 [2022-11-16 12:03:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:54,410 INFO L225 Difference]: With dead ends: 885 [2022-11-16 12:03:54,410 INFO L226 Difference]: Without dead ends: 488 [2022-11-16 12:03:54,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:03:54,413 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1111 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:54,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 4669 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:03:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-16 12:03:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 482. [2022-11-16 12:03:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2395833333333333) internal successors, (357), 292 states have internal predecessors, (357), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2022-11-16 12:03:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 722 transitions. [2022-11-16 12:03:54,444 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 722 transitions. Word has length 234 [2022-11-16 12:03:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:54,445 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 722 transitions. [2022-11-16 12:03:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2022-11-16 12:03:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 722 transitions. [2022-11-16 12:03:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-16 12:03:54,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:54,450 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:54,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:03:54,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:54,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:54,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1782724904, now seen corresponding path program 2 times [2022-11-16 12:03:54,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:54,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540691518] [2022-11-16 12:03:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:54,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:54,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:03:54,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033452532] [2022-11-16 12:03:54,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:03:54,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:03:54,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:03:54,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:03:54,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:03:55,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:03:55,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:03:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:03:55,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:03:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-16 12:03:55,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:03:55,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:55,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540691518] [2022-11-16 12:03:55,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033452532] [2022-11-16 12:03:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033452532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:55,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:55,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:03:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247009747] [2022-11-16 12:03:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:03:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:03:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:03:55,885 INFO L87 Difference]: Start difference. First operand 482 states and 722 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-16 12:03:57,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:03:58,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:04:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:02,329 INFO L93 Difference]: Finished difference Result 894 states and 1359 transitions. [2022-11-16 12:04:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:04:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 249 [2022-11-16 12:04:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:02,334 INFO L225 Difference]: With dead ends: 894 [2022-11-16 12:04:02,335 INFO L226 Difference]: Without dead ends: 484 [2022-11-16 12:04:02,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:04:02,338 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 759 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 4104 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 12:04:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-16 12:04:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2022-11-16 12:04:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (188), 161 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-16 12:04:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 688 transitions. [2022-11-16 12:04:02,367 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 688 transitions. Word has length 249 [2022-11-16 12:04:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:02,368 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 688 transitions. [2022-11-16 12:04:02,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-16 12:04:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 688 transitions. [2022-11-16 12:04:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-16 12:04:02,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:02,373 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:02,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:04:02,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:02,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2009774676, now seen corresponding path program 3 times [2022-11-16 12:04:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:02,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853271832] [2022-11-16 12:04:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:02,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:02,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:02,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670733270] [2022-11-16 12:04:02,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:04:02,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:02,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:02,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:02,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:04:03,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:04:03,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:03,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:04:03,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-16 12:04:03,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853271832] [2022-11-16 12:04:03,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670733270] [2022-11-16 12:04:03,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670733270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:03,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:03,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398456300] [2022-11-16 12:04:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:03,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:03,607 INFO L87 Difference]: Start difference. First operand 466 states and 688 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 12:04:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:04,083 INFO L93 Difference]: Finished difference Result 853 states and 1292 transitions. [2022-11-16 12:04:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:04:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 264 [2022-11-16 12:04:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:04,089 INFO L225 Difference]: With dead ends: 853 [2022-11-16 12:04:04,089 INFO L226 Difference]: Without dead ends: 466 [2022-11-16 12:04:04,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:04,093 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 2 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:04,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2869 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:04:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-16 12:04:04,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2022-11-16 12:04:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 278 states have internal predecessors, (338), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (187), 161 states have call predecessors, (187), 160 states have call successors, (187) [2022-11-16 12:04:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 687 transitions. [2022-11-16 12:04:04,124 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 687 transitions. Word has length 264 [2022-11-16 12:04:04,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:04,125 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 687 transitions. [2022-11-16 12:04:04,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-16 12:04:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 687 transitions. [2022-11-16 12:04:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-16 12:04:04,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:04,130 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:04,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:04,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 69624382, now seen corresponding path program 4 times [2022-11-16 12:04:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091304798] [2022-11-16 12:04:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:04,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:04,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442940041] [2022-11-16 12:04:04,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:04:04,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:04,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:04,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:04,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:04:05,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:04:05,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:05,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3453 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:04:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-16 12:04:05,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091304798] [2022-11-16 12:04:05,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442940041] [2022-11-16 12:04:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442940041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:05,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:05,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:04:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499169863] [2022-11-16 12:04:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:05,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:04:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:04:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:04:05,615 INFO L87 Difference]: Start difference. First operand 466 states and 687 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:04:07,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:04:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:10,831 INFO L93 Difference]: Finished difference Result 864 states and 1284 transitions. [2022-11-16 12:04:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:04:10,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 279 [2022-11-16 12:04:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:10,836 INFO L225 Difference]: With dead ends: 864 [2022-11-16 12:04:10,837 INFO L226 Difference]: Without dead ends: 478 [2022-11-16 12:04:10,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:04:10,840 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 77 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:10,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 3980 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 12:04:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-16 12:04:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-11-16 12:04:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 280 states have (on average 1.2321428571428572) internal successors, (345), 284 states have internal predecessors, (345), 167 states have call successors, (167), 28 states have call predecessors, (167), 29 states have return successors, (192), 166 states have call predecessors, (192), 165 states have call successors, (192) [2022-11-16 12:04:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 704 transitions. [2022-11-16 12:04:10,874 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 704 transitions. Word has length 279 [2022-11-16 12:04:10,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:10,875 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 704 transitions. [2022-11-16 12:04:10,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-16 12:04:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 704 transitions. [2022-11-16 12:04:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:04:10,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:10,879 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:10,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:11,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:04:11,093 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash 534833532, now seen corresponding path program 1 times [2022-11-16 12:04:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:11,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712960067] [2022-11-16 12:04:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:11,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:11,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928638927] [2022-11-16 12:04:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:11,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:11,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:11,248 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:11,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:04:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:12,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3594 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:04:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 12:04:12,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:12,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:12,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712960067] [2022-11-16 12:04:12,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:12,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928638927] [2022-11-16 12:04:12,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928638927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:12,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:12,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188923777] [2022-11-16 12:04:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:12,723 INFO L87 Difference]: Start difference. First operand 478 states and 704 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 12:04:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:15,567 INFO L93 Difference]: Finished difference Result 956 states and 1464 transitions. [2022-11-16 12:04:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:04:15,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-16 12:04:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:15,572 INFO L225 Difference]: With dead ends: 956 [2022-11-16 12:04:15,572 INFO L226 Difference]: Without dead ends: 514 [2022-11-16 12:04:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:15,577 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 23 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2974 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:04:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-16 12:04:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 486. [2022-11-16 12:04:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 288 states have (on average 1.2326388888888888) internal successors, (355), 292 states have internal predecessors, (355), 167 states have call successors, (167), 28 states have call predecessors, (167), 29 states have return successors, (192), 166 states have call predecessors, (192), 165 states have call successors, (192) [2022-11-16 12:04:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 714 transitions. [2022-11-16 12:04:15,614 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 714 transitions. Word has length 294 [2022-11-16 12:04:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:15,615 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 714 transitions. [2022-11-16 12:04:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 12:04:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 714 transitions. [2022-11-16 12:04:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:04:15,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:15,618 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:15,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:15,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:04:15,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:15,834 INFO L85 PathProgramCache]: Analyzing trace with hash 71838976, now seen corresponding path program 1 times [2022-11-16 12:04:15,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:15,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990103951] [2022-11-16 12:04:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:15,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:15,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:15,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848012430] [2022-11-16 12:04:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:15,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:15,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:04:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:17,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 3588 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:04:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-16 12:04:17,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990103951] [2022-11-16 12:04:17,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848012430] [2022-11-16 12:04:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848012430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:17,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:17,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:04:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397483362] [2022-11-16 12:04:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:17,451 INFO L87 Difference]: Start difference. First operand 486 states and 714 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 12:04:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:17,524 INFO L93 Difference]: Finished difference Result 944 states and 1422 transitions. [2022-11-16 12:04:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-16 12:04:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:17,529 INFO L225 Difference]: With dead ends: 944 [2022-11-16 12:04:17,530 INFO L226 Difference]: Without dead ends: 494 [2022-11-16 12:04:17,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:04:17,534 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 3 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1885 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 [2022-11-16 12:04:17,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1885 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:04:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-16 12:04:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 490. [2022-11-16 12:04:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 292 states have (on average 1.2294520547945205) internal successors, (359), 296 states have internal predecessors, (359), 167 states have call successors, (167), 28 states have call predecessors, (167), 29 states have return successors, (192), 166 states have call predecessors, (192), 165 states have call successors, (192) [2022-11-16 12:04:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 718 transitions. [2022-11-16 12:04:17,571 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 718 transitions. Word has length 294 [2022-11-16 12:04:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:17,572 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 718 transitions. [2022-11-16 12:04:17,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 12:04:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 718 transitions. [2022-11-16 12:04:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-16 12:04:17,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:17,575 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:17,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:17,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:17,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1443724924, now seen corresponding path program 1 times [2022-11-16 12:04:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:17,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612094711] [2022-11-16 12:04:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:17,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:17,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156655260] [2022-11-16 12:04:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:17,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:17,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:17,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:17,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:04:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:19,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 3578 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 12:04:19,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-16 12:04:19,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-11-16 12:04:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:20,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612094711] [2022-11-16 12:04:20,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:20,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156655260] [2022-11-16 12:04:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156655260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:20,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:04:20,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2022-11-16 12:04:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261314517] [2022-11-16 12:04:20,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:04:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:04:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:04:20,262 INFO L87 Difference]: Start difference. First operand 490 states and 718 transitions. Second operand has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-16 12:04:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:21,144 INFO L93 Difference]: Finished difference Result 949 states and 1397 transitions. [2022-11-16 12:04:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:04:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 294 [2022-11-16 12:04:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:21,150 INFO L225 Difference]: With dead ends: 949 [2022-11-16 12:04:21,150 INFO L226 Difference]: Without dead ends: 495 [2022-11-16 12:04:21,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:04:21,154 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 6 mSDsluCounter, 7030 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7629 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:21,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7629 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:04:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-16 12:04:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2022-11-16 12:04:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 294 states have (on average 1.227891156462585) internal successors, (361), 299 states have internal predecessors, (361), 167 states have call successors, (167), 28 states have call predecessors, (167), 30 states have return successors, (195), 166 states have call predecessors, (195), 165 states have call successors, (195) [2022-11-16 12:04:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 723 transitions. [2022-11-16 12:04:21,193 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 723 transitions. Word has length 294 [2022-11-16 12:04:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:21,194 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 723 transitions. [2022-11-16 12:04:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-16 12:04:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 723 transitions. [2022-11-16 12:04:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-16 12:04:21,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:21,197 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:21,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:21,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -929007272, now seen corresponding path program 1 times [2022-11-16 12:04:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:21,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976120725] [2022-11-16 12:04:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:21,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:21,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526228203] [2022-11-16 12:04:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:21,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:21,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:21,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:04:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:22,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 12:04:22,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-16 12:04:23,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-16 12:04:23,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:23,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976120725] [2022-11-16 12:04:23,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:23,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526228203] [2022-11-16 12:04:23,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526228203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:23,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:04:23,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-16 12:04:23,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087940628] [2022-11-16 12:04:23,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:23,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:04:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:04:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:04:23,517 INFO L87 Difference]: Start difference. First operand 493 states and 723 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-16 12:04:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:27,322 INFO L93 Difference]: Finished difference Result 959 states and 1421 transitions. [2022-11-16 12:04:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:04:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 305 [2022-11-16 12:04:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:27,328 INFO L225 Difference]: With dead ends: 959 [2022-11-16 12:04:27,328 INFO L226 Difference]: Without dead ends: 544 [2022-11-16 12:04:27,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:04:27,332 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 56 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:27,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4548 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 12:04:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-16 12:04:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 513. [2022-11-16 12:04:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 307 states have (on average 1.231270358306189) internal successors, (378), 311 states have internal predecessors, (378), 174 states have call successors, (174), 28 states have call predecessors, (174), 30 states have return successors, (204), 174 states have call predecessors, (204), 172 states have call successors, (204) [2022-11-16 12:04:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 756 transitions. [2022-11-16 12:04:27,373 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 756 transitions. Word has length 305 [2022-11-16 12:04:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:27,374 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 756 transitions. [2022-11-16 12:04:27,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-16 12:04:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 756 transitions. [2022-11-16 12:04:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-16 12:04:27,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:27,415 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:27,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:04:27,616 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:27,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash -852106474, now seen corresponding path program 1 times [2022-11-16 12:04:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10373467] [2022-11-16 12:04:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:27,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:27,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039565083] [2022-11-16 12:04:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:27,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:27,745 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:27,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:04:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:04:29,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-16 12:04:29,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:29,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10373467] [2022-11-16 12:04:29,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039565083] [2022-11-16 12:04:29,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039565083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:29,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:29,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:29,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014934807] [2022-11-16 12:04:29,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:29,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:29,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:29,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:29,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:29,320 INFO L87 Difference]: Start difference. First operand 513 states and 756 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-16 12:04:30,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:04:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:30,803 INFO L93 Difference]: Finished difference Result 973 states and 1442 transitions. [2022-11-16 12:04:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:04:30,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 305 [2022-11-16 12:04:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:30,809 INFO L225 Difference]: With dead ends: 973 [2022-11-16 12:04:30,809 INFO L226 Difference]: Without dead ends: 550 [2022-11-16 12:04:30,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:30,813 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 48 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:30,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3215 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 12:04:30,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-16 12:04:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 521. [2022-11-16 12:04:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 311 states have (on average 1.22508038585209) internal successors, (381), 315 states have internal predecessors, (381), 178 states have call successors, (178), 28 states have call predecessors, (178), 30 states have return successors, (208), 178 states have call predecessors, (208), 176 states have call successors, (208) [2022-11-16 12:04:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 767 transitions. [2022-11-16 12:04:30,897 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 767 transitions. Word has length 305 [2022-11-16 12:04:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:30,898 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 767 transitions. [2022-11-16 12:04:30,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2022-11-16 12:04:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 767 transitions. [2022-11-16 12:04:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-16 12:04:30,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:30,902 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:30,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:31,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:04:31,118 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1775273900, now seen corresponding path program 1 times [2022-11-16 12:04:31,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:31,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030704753] [2022-11-16 12:04:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:31,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:31,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:31,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55206645] [2022-11-16 12:04:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:31,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:31,236 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:31,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:04:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:32,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:04:32,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-16 12:04:32,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030704753] [2022-11-16 12:04:32,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55206645] [2022-11-16 12:04:32,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55206645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:32,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:32,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:04:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198728069] [2022-11-16 12:04:32,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:04:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:04:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:04:32,655 INFO L87 Difference]: Start difference. First operand 521 states and 767 transitions. Second operand has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-16 12:04:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:33,489 INFO L93 Difference]: Finished difference Result 936 states and 1384 transitions. [2022-11-16 12:04:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:33,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 305 [2022-11-16 12:04:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:33,496 INFO L225 Difference]: With dead ends: 936 [2022-11-16 12:04:33,496 INFO L226 Difference]: Without dead ends: 493 [2022-11-16 12:04:33,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:33,500 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:33,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2286 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:04:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-16 12:04:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-11-16 12:04:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 294 states have (on average 1.2210884353741496) internal successors, (359), 299 states have internal predecessors, (359), 167 states have call successors, (167), 28 states have call predecessors, (167), 30 states have return successors, (194), 166 states have call predecessors, (194), 165 states have call successors, (194) [2022-11-16 12:04:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 720 transitions. [2022-11-16 12:04:33,539 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 720 transitions. Word has length 305 [2022-11-16 12:04:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:33,540 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 720 transitions. [2022-11-16 12:04:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-16 12:04:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 720 transitions. [2022-11-16 12:04:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-16 12:04:33,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:33,546 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:33,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:04:33,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1598069472, now seen corresponding path program 1 times [2022-11-16 12:04:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:33,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148926548] [2022-11-16 12:04:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:33,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:33,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455351644] [2022-11-16 12:04:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:33,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:33,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:33,893 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:04:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:35,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-16 12:04:35,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:37,309 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 25 treesize of output 17 [2022-11-16 12:04:37,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:04:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-16 12:04:37,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:37,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148926548] [2022-11-16 12:04:37,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:37,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455351644] [2022-11-16 12:04:37,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455351644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:37,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:37,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-16 12:04:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489761281] [2022-11-16 12:04:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:37,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:04:37,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:04:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:04:37,368 INFO L87 Difference]: Start difference. First operand 493 states and 720 transitions. Second operand has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-16 12:04:41,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:04:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:45,708 INFO L93 Difference]: Finished difference Result 993 states and 1498 transitions. [2022-11-16 12:04:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:04:45,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) Word has length 316 [2022-11-16 12:04:45,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:45,714 INFO L225 Difference]: With dead ends: 993 [2022-11-16 12:04:45,714 INFO L226 Difference]: Without dead ends: 565 [2022-11-16 12:04:45,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:04:45,720 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 126 mSDsluCounter, 7749 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8356 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 665 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:45,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8356 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 987 Invalid, 0 Unknown, 665 Unchecked, 7.9s Time] [2022-11-16 12:04:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-16 12:04:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 532. [2022-11-16 12:04:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 322 states have (on average 1.2111801242236024) internal successors, (390), 327 states have internal predecessors, (390), 173 states have call successors, (173), 32 states have call predecessors, (173), 35 states have return successors, (215), 173 states have call predecessors, (215), 171 states have call successors, (215) [2022-11-16 12:04:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 778 transitions. [2022-11-16 12:04:45,776 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 778 transitions. Word has length 316 [2022-11-16 12:04:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:45,776 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 778 transitions. [2022-11-16 12:04:45,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-16 12:04:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 778 transitions. [2022-11-16 12:04:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-16 12:04:45,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:45,780 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:45,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:45,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:04:45,998 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1267124642, now seen corresponding path program 1 times [2022-11-16 12:04:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715770801] [2022-11-16 12:04:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:46,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:46,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750486693] [2022-11-16 12:04:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:46,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:46,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:46,117 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:46,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:04:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:47,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:04:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-16 12:04:47,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:47,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715770801] [2022-11-16 12:04:47,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750486693] [2022-11-16 12:04:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750486693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:47,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:47,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:04:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179874079] [2022-11-16 12:04:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:04:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:04:47,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:04:47,416 INFO L87 Difference]: Start difference. First operand 532 states and 778 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:04:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:47,492 INFO L93 Difference]: Finished difference Result 1021 states and 1559 transitions. [2022-11-16 12:04:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:04:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-11-16 12:04:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:47,497 INFO L225 Difference]: With dead ends: 1021 [2022-11-16 12:04:47,497 INFO L226 Difference]: Without dead ends: 552 [2022-11-16 12:04:47,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:47,502 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 8 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:47,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2592 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:04:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-16 12:04:47,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 540. [2022-11-16 12:04:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 330 states have (on average 1.209090909090909) internal successors, (399), 335 states have internal predecessors, (399), 173 states have call successors, (173), 32 states have call predecessors, (173), 35 states have return successors, (215), 173 states have call predecessors, (215), 171 states have call successors, (215) [2022-11-16 12:04:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 787 transitions. [2022-11-16 12:04:47,545 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 787 transitions. Word has length 316 [2022-11-16 12:04:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 787 transitions. [2022-11-16 12:04:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:04:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 787 transitions. [2022-11-16 12:04:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 12:04:47,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:47,549 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:47,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:47,762 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -453237776, now seen corresponding path program 1 times [2022-11-16 12:04:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059025218] [2022-11-16 12:04:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:47,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839111283] [2022-11-16 12:04:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:47,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:47,860 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:47,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:04:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:49,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:04:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:49,327 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 11 treesize of output 5 [2022-11-16 12:04:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-16 12:04:49,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059025218] [2022-11-16 12:04:49,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839111283] [2022-11-16 12:04:49,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839111283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:49,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:49,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:04:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539997371] [2022-11-16 12:04:49,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:49,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:04:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:04:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:04:49,365 INFO L87 Difference]: Start difference. First operand 540 states and 787 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-16 12:04:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:55,641 INFO L93 Difference]: Finished difference Result 1087 states and 1677 transitions. [2022-11-16 12:04:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:04:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 317 [2022-11-16 12:04:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:55,646 INFO L225 Difference]: With dead ends: 1087 [2022-11-16 12:04:55,646 INFO L226 Difference]: Without dead ends: 583 [2022-11-16 12:04:55,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:04:55,651 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 129 mSDsluCounter, 4869 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:55,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 5457 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 12:04:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-16 12:04:55,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 543. [2022-11-16 12:04:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 332 states have (on average 1.2018072289156627) internal successors, (399), 336 states have internal predecessors, (399), 173 states have call successors, (173), 32 states have call predecessors, (173), 36 states have return successors, (234), 175 states have call predecessors, (234), 171 states have call successors, (234) [2022-11-16 12:04:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 806 transitions. [2022-11-16 12:04:55,700 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 806 transitions. Word has length 317 [2022-11-16 12:04:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:55,701 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 806 transitions. [2022-11-16 12:04:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-16 12:04:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 806 transitions. [2022-11-16 12:04:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 12:04:55,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:55,705 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:04:55,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:55,922 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash 584916144, now seen corresponding path program 1 times [2022-11-16 12:04:55,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:55,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928881596] [2022-11-16 12:04:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:56,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:56,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326329153] [2022-11-16 12:04:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:56,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:56,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:56,035 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:56,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:04:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:57,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3644 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:04:57,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-16 12:04:57,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928881596] [2022-11-16 12:04:57,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:04:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326329153] [2022-11-16 12:04:57,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326329153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:57,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:57,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:04:57,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538292366] [2022-11-16 12:04:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:57,487 INFO L87 Difference]: Start difference. First operand 543 states and 806 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:04:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:57,569 INFO L93 Difference]: Finished difference Result 1050 states and 1647 transitions. [2022-11-16 12:04:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2022-11-16 12:04:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:57,575 INFO L225 Difference]: With dead ends: 1050 [2022-11-16 12:04:57,575 INFO L226 Difference]: Without dead ends: 543 [2022-11-16 12:04:57,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:04:57,581 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 7 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:57,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1885 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:04:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-16 12:04:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2022-11-16 12:04:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 332 states have (on average 1.1987951807228916) internal successors, (398), 336 states have internal predecessors, (398), 173 states have call successors, (173), 32 states have call predecessors, (173), 36 states have return successors, (234), 175 states have call predecessors, (234), 171 states have call successors, (234) [2022-11-16 12:04:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 805 transitions. [2022-11-16 12:04:57,639 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 805 transitions. Word has length 317 [2022-11-16 12:04:57,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:57,641 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 805 transitions. [2022-11-16 12:04:57,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:04:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 805 transitions. [2022-11-16 12:04:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-16 12:04:57,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:57,647 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:57,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 12:04:57,863 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash 834653558, now seen corresponding path program 1 times [2022-11-16 12:04:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:57,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381254546] [2022-11-16 12:04:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:57,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:57,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:04:57,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314215379] [2022-11-16 12:04:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:57,994 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:58,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:04:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 3683 conjuncts, 239 conjunts are in the unsatisfiable core [2022-11-16 12:04:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:02,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2022-11-16 12:05:02,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:05:02,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 161 [2022-11-16 12:05:02,938 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:05:02,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:05:03,039 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:05:03,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:05:03,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:05:03,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:05:03,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:05:03,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:05:03,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:05:03,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2022-11-16 12:05:03,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2022-11-16 12:05:03,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2022-11-16 12:05:03,289 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 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-16 12:05:03,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:05:03,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-11-16 12:05:03,373 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 0 case distinctions, treesize of input 23 treesize of output 8 [2022-11-16 12:05:03,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 29 [2022-11-16 12:05:03,417 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 [2022-11-16 12:05:05,265 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7472 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7472)))) (exists ((v_ArrVal_7475 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7475)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7474 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7474) |c_#memory_int|))) is different from true [2022-11-16 12:05:06,847 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7479 Int) (v_ArrVal_7477 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7477))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7479))))) is different from true [2022-11-16 12:05:14,567 INFO L321 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-11-16 12:05:14,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 247 treesize of output 252 [2022-11-16 12:05:14,615 INFO L321 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-11-16 12:05:14,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 197 [2022-11-16 12:05:14,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 166 [2022-11-16 12:05:14,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-11-16 12:05:14,683 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-16 12:05:14,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 154 [2022-11-16 12:05:14,701 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 90 treesize of output 88 [2022-11-16 12:05:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 465 proven. 37 refuted. 0 times theorem prover too weak. 143 trivial. 3 not checked. [2022-11-16 12:05:14,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:19,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:19,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381254546] [2022-11-16 12:05:19,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:05:19,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314215379] [2022-11-16 12:05:19,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314215379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:19,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:19,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-16 12:05:19,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940493966] [2022-11-16 12:05:19,139 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:19,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:05:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:05:19,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2224, Unknown=64, NotChecked=194, Total=2652 [2022-11-16 12:05:19,143 INFO L87 Difference]: Start difference. First operand 543 states and 805 transitions. Second operand has 45 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 39 states have internal predecessors, (160), 17 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (38), 15 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:05:20,035 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7479 Int) (v_ArrVal_7477 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7477))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7479))))) (exists ((v_ArrVal_7472 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7472)))) (exists ((v_ArrVal_7475 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7475)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7474 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7474) |c_#memory_int|))) is different from true [2022-11-16 12:05:33,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:35,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:38,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:46,133 INFO L93 Difference]: Finished difference Result 1246 states and 1991 transitions. [2022-11-16 12:05:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-16 12:05:46,135 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 39 states have internal predecessors, (160), 17 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (38), 15 states have call predecessors, (38), 17 states have call successors, (38) Word has length 325 [2022-11-16 12:05:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:46,145 INFO L225 Difference]: With dead ends: 1246 [2022-11-16 12:05:46,146 INFO L226 Difference]: Without dead ends: 799 [2022-11-16 12:05:46,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 346 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=253, Invalid=3467, Unknown=74, NotChecked=366, Total=4160 [2022-11-16 12:05:46,151 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 269 mSDsluCounter, 7804 mSDsCounter, 0 mSdLazyCounter, 4824 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 13617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 4824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8579 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:46,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 8363 Invalid, 13617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [214 Valid, 4824 Invalid, 0 Unknown, 8579 Unchecked, 15.0s Time] [2022-11-16 12:05:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-16 12:05:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 675. [2022-11-16 12:05:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 434 states have (on average 1.195852534562212) internal successors, (519), 442 states have internal predecessors, (519), 187 states have call successors, (187), 42 states have call predecessors, (187), 52 states have return successors, (368), 191 states have call predecessors, (368), 185 states have call successors, (368) [2022-11-16 12:05:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1074 transitions. [2022-11-16 12:05:46,232 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1074 transitions. Word has length 325 [2022-11-16 12:05:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:46,233 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1074 transitions. [2022-11-16 12:05:46,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 39 states have internal predecessors, (160), 17 states have call successors, (40), 8 states have call predecessors, (40), 12 states have return successors, (38), 15 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:05:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1074 transitions. [2022-11-16 12:05:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-16 12:05:46,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:46,238 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:46,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:46,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:46,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1407554005, now seen corresponding path program 1 times [2022-11-16 12:05:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:46,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763084624] [2022-11-16 12:05:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:46,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:46,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:05:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291338703] [2022-11-16 12:05:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:46,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:46,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:46,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:46,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:05:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:48,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:05:48,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-16 12:05:48,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:48,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763084624] [2022-11-16 12:05:48,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:05:48,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291338703] [2022-11-16 12:05:48,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291338703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:48,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:48,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907631618] [2022-11-16 12:05:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:48,227 INFO L87 Difference]: Start difference. First operand 675 states and 1074 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 12:05:49,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:50,568 INFO L93 Difference]: Finished difference Result 1307 states and 2176 transitions. [2022-11-16 12:05:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 345 [2022-11-16 12:05:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:50,575 INFO L225 Difference]: With dead ends: 1307 [2022-11-16 12:05:50,575 INFO L226 Difference]: Without dead ends: 671 [2022-11-16 12:05:50,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:50,579 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 15 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:50,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2412 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:05:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-16 12:05:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 666. [2022-11-16 12:05:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 426 states have (on average 1.1901408450704225) internal successors, (507), 434 states have internal predecessors, (507), 187 states have call successors, (187), 42 states have call predecessors, (187), 51 states have return successors, (348), 190 states have call predecessors, (348), 185 states have call successors, (348) [2022-11-16 12:05:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1042 transitions. [2022-11-16 12:05:50,651 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1042 transitions. Word has length 345 [2022-11-16 12:05:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:50,652 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1042 transitions. [2022-11-16 12:05:50,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-16 12:05:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1042 transitions. [2022-11-16 12:05:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-16 12:05:50,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:50,657 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:50,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:50,871 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1186516838, now seen corresponding path program 1 times [2022-11-16 12:05:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124905657] [2022-11-16 12:05:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:50,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:05:50,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321502068] [2022-11-16 12:05:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:50,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:50,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:50,977 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:50,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:05:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:52,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 3683 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:05:52,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-16 12:05:52,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:52,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124905657] [2022-11-16 12:05:52,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:05:52,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321502068] [2022-11-16 12:05:52,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321502068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:52,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:52,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534346488] [2022-11-16 12:05:52,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:05:52,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:05:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:05:52,661 INFO L87 Difference]: Start difference. First operand 666 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:05:54,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:05:56,221 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 [] [2022-11-16 12:05:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:05:56,474 INFO L93 Difference]: Finished difference Result 1289 states and 2111 transitions. [2022-11-16 12:05:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 327 [2022-11-16 12:05:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:05:56,482 INFO L225 Difference]: With dead ends: 1289 [2022-11-16 12:05:56,482 INFO L226 Difference]: Without dead ends: 662 [2022-11-16 12:05:56,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:56,489 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 10 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:05:56,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2427 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 12:05:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-11-16 12:05:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-11-16 12:05:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 423 states have (on average 1.1891252955082743) internal successors, (503), 430 states have internal predecessors, (503), 187 states have call successors, (187), 42 states have call predecessors, (187), 50 states have return successors, (327), 190 states have call predecessors, (327), 185 states have call successors, (327) [2022-11-16 12:05:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1017 transitions. [2022-11-16 12:05:56,560 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1017 transitions. Word has length 327 [2022-11-16 12:05:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1017 transitions. [2022-11-16 12:05:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:05:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1017 transitions. [2022-11-16 12:05:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-16 12:05:56,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:56,566 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:56,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:05:56,783 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 509809340, now seen corresponding path program 2 times [2022-11-16 12:05:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:56,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986910979] [2022-11-16 12:05:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:56,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:56,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:05:56,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163039749] [2022-11-16 12:05:56,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:56,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:56,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:56,893 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:56,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:05:58,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:05:58,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 12:05:58,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 348 proven. 23 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 12:06:00,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:01,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986910979] [2022-11-16 12:06:01,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163039749] [2022-11-16 12:06:01,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163039749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:01,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:01,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-11-16 12:06:01,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403565935] [2022-11-16 12:06:01,371 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:06:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:01,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:06:01,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:06:01,374 INFO L87 Difference]: Start difference. First operand 662 states and 1017 transitions. Second operand has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) [2022-11-16 12:06:05,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:06:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:20,478 INFO L93 Difference]: Finished difference Result 1741 states and 3131 transitions. [2022-11-16 12:06:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:06:20,479 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) Word has length 353 [2022-11-16 12:06:20,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:20,494 INFO L225 Difference]: With dead ends: 1741 [2022-11-16 12:06:20,495 INFO L226 Difference]: Without dead ends: 1240 [2022-11-16 12:06:20,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 346 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=275, Invalid=1795, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 12:06:20,501 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 434 mSDsluCounter, 6589 mSDsCounter, 0 mSdLazyCounter, 8746 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 7347 SdHoareTripleChecker+Invalid, 9722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 8746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 661 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 7347 Invalid, 9722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [315 Valid, 8746 Invalid, 0 Unknown, 661 Unchecked, 17.7s Time] [2022-11-16 12:06:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-11-16 12:06:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 775. [2022-11-16 12:06:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 512 states have (on average 1.18359375) internal successors, (606), 521 states have internal predecessors, (606), 202 states have call successors, (202), 45 states have call predecessors, (202), 59 states have return successors, (455), 209 states have call predecessors, (455), 200 states have call successors, (455) [2022-11-16 12:06:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1263 transitions. [2022-11-16 12:06:20,626 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1263 transitions. Word has length 353 [2022-11-16 12:06:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:20,627 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 1263 transitions. [2022-11-16 12:06:20,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 11 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 9 states have call predecessors, (37), 10 states have call successors, (37) [2022-11-16 12:06:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1263 transitions. [2022-11-16 12:06:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-16 12:06:20,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:20,633 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:20,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:20,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:06:20,850 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:20,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1818489988, now seen corresponding path program 3 times [2022-11-16 12:06:20,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:20,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533477850] [2022-11-16 12:06:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:20,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:20,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206347456] [2022-11-16 12:06:20,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:06:20,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:20,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:20,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:06:22,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:06:22,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:22,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:06:22,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-16 12:06:22,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533477850] [2022-11-16 12:06:22,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206347456] [2022-11-16 12:06:22,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206347456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:22,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:22,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:06:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455915143] [2022-11-16 12:06:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:06:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:06:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:06:22,535 INFO L87 Difference]: Start difference. First operand 775 states and 1263 transitions. Second operand has 12 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-16 12:06:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:06:23,280 INFO L93 Difference]: Finished difference Result 1358 states and 2264 transitions. [2022-11-16 12:06:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:06:23,281 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 353 [2022-11-16 12:06:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:06:23,287 INFO L225 Difference]: With dead ends: 1358 [2022-11-16 12:06:23,287 INFO L226 Difference]: Without dead ends: 754 [2022-11-16 12:06:23,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:06:23,292 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 11 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:06:23,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 6624 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:06:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-16 12:06:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2022-11-16 12:06:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 498 states have (on average 1.1867469879518073) internal successors, (591), 507 states have internal predecessors, (591), 197 states have call successors, (197), 45 states have call predecessors, (197), 57 states have return successors, (431), 202 states have call predecessors, (431), 195 states have call successors, (431) [2022-11-16 12:06:23,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1219 transitions. [2022-11-16 12:06:23,381 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1219 transitions. Word has length 353 [2022-11-16 12:06:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:06:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1219 transitions. [2022-11-16 12:06:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.0) internal successors, (132), 9 states have internal predecessors, (132), 3 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-16 12:06:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1219 transitions. [2022-11-16 12:06:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-16 12:06:23,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:06:23,388 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:23,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:06:23,601 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:06:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1473231882, now seen corresponding path program 1 times [2022-11-16 12:06:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:23,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030662151] [2022-11-16 12:06:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:23,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:06:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448784197] [2022-11-16 12:06:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:23,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:23,726 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:23,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:06:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:25,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 3693 conjuncts, 263 conjunts are in the unsatisfiable core [2022-11-16 12:06:25,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:25,937 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9354 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_9354))) is different from true [2022-11-16 12:06:26,268 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:06:26,268 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 18 treesize of output 24 [2022-11-16 12:06:26,280 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 9 treesize of output 5 [2022-11-16 12:06:30,643 INFO L321 Elim1Store]: treesize reduction 75, result has 10.7 percent of original size [2022-11-16 12:06:30,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 96 [2022-11-16 12:06:30,696 INFO L321 Elim1Store]: treesize reduction 75, result has 10.7 percent of original size [2022-11-16 12:06:30,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 96 [2022-11-16 12:06:30,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 185 [2022-11-16 12:06:30,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 185 [2022-11-16 12:06:30,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:06:30,808 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 [2022-11-16 12:06:30,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:06:30,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:06:30,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 44 [2022-11-16 12:06:31,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 36 [2022-11-16 12:06:31,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 144 [2022-11-16 12:06:31,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 111 [2022-11-16 12:06:33,371 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9394 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9394))) (exists ((v_ArrVal_9393 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9393)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_9395 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9395))))) is different from true [2022-11-16 12:06:35,778 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9396 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9399 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9399))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9396)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:06:38,454 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9396 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9399 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_9399))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_9396)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:06:50,348 INFO L321 Elim1Store]: treesize reduction 44, result has 43.6 percent of original size [2022-11-16 12:06:50,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 326 treesize of output 420 [2022-11-16 12:06:50,649 INFO L321 Elim1Store]: treesize reduction 44, result has 43.6 percent of original size [2022-11-16 12:06:50,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 246 treesize of output 340 [2022-11-16 12:06:50,752 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 142 treesize of output 130 [2022-11-16 12:06:50,805 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 130 treesize of output 128 [2022-11-16 12:06:51,240 INFO L321 Elim1Store]: treesize reduction 4, result has 95.1 percent of original size [2022-11-16 12:06:51,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 268 [2022-11-16 12:06:51,290 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 122 treesize of output 120 [2022-11-16 12:06:51,342 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 120 treesize of output 118 [2022-11-16 12:06:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 407 proven. 100 refuted. 4 times theorem prover too weak. 123 trivial. 20 not checked. [2022-11-16 12:06:52,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:57,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030662151] [2022-11-16 12:06:57,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:06:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448784197] [2022-11-16 12:06:57,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448784197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:57,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:57,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-11-16 12:06:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51307909] [2022-11-16 12:06:57,442 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:57,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:06:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:57,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:06:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3356, Unknown=105, NotChecked=484, Total=4160 [2022-11-16 12:06:57,446 INFO L87 Difference]: Start difference. First operand 754 states and 1219 transitions. Second operand has 59 states, 55 states have (on average 3.109090909090909) internal successors, (171), 52 states have internal predecessors, (171), 20 states have call successors, (41), 9 states have call predecessors, (41), 15 states have return successors, (39), 19 states have call predecessors, (39), 20 states have call successors, (39) [2022-11-16 12:06:58,532 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9394 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9394))) (exists ((v_ArrVal_9396 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9399 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9399))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9396)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_9393 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9393)) |c_#memory_$Pointer$.offset|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_9354 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_9354))) (exists ((v_ArrVal_9395 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9395))))) is different from true [2022-11-16 12:07:14,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:07:21,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:07:23,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:07:25,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:07:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:34,449 INFO L93 Difference]: Finished difference Result 1918 states and 3394 transitions. [2022-11-16 12:07:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 12:07:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 55 states have (on average 3.109090909090909) internal successors, (171), 52 states have internal predecessors, (171), 20 states have call successors, (41), 9 states have call predecessors, (41), 15 states have return successors, (39), 19 states have call predecessors, (39), 20 states have call successors, (39) Word has length 329 [2022-11-16 12:07:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:34,457 INFO L225 Difference]: With dead ends: 1918 [2022-11-16 12:07:34,458 INFO L226 Difference]: Without dead ends: 1334 [2022-11-16 12:07:34,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 338 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=469, Invalid=7047, Unknown=160, NotChecked=880, Total=8556 [2022-11-16 12:07:34,462 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 669 mSDsluCounter, 10310 mSDsCounter, 0 mSdLazyCounter, 8140 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 10916 SdHoareTripleChecker+Invalid, 26114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 8140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17403 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:34,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 10916 Invalid, 26114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 8140 Invalid, 0 Unknown, 17403 Unchecked, 22.5s Time] [2022-11-16 12:07:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2022-11-16 12:07:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 842. [2022-11-16 12:07:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 564 states have (on average 1.1843971631205674) internal successors, (668), 573 states have internal predecessors, (668), 210 states have call successors, (210), 52 states have call predecessors, (210), 66 states have return successors, (500), 217 states have call predecessors, (500), 208 states have call successors, (500) [2022-11-16 12:07:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1378 transitions. [2022-11-16 12:07:34,600 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1378 transitions. Word has length 329 [2022-11-16 12:07:34,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:34,601 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1378 transitions. [2022-11-16 12:07:34,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 55 states have (on average 3.109090909090909) internal successors, (171), 52 states have internal predecessors, (171), 20 states have call successors, (41), 9 states have call predecessors, (41), 15 states have return successors, (39), 19 states have call predecessors, (39), 20 states have call successors, (39) [2022-11-16 12:07:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1378 transitions. [2022-11-16 12:07:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-16 12:07:34,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:34,606 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:34,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:07:34,823 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1151523863, now seen corresponding path program 4 times [2022-11-16 12:07:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877552763] [2022-11-16 12:07:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:34,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:34,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306130752] [2022-11-16 12:07:34,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:07:34,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:34,925 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:34,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:07:36,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:07:36,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:36,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 3697 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:07:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 353 proven. 18 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-16 12:07:36,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 93 proven. 47 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2022-11-16 12:07:37,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:37,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877552763] [2022-11-16 12:07:37,910 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:37,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306130752] [2022-11-16 12:07:37,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306130752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:37,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:37,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2022-11-16 12:07:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238719977] [2022-11-16 12:07:37,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:07:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:07:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:07:37,912 INFO L87 Difference]: Start difference. First operand 842 states and 1378 transitions. Second operand has 29 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 22 states have internal predecessors, (177), 7 states have call successors, (43), 2 states have call predecessors, (43), 10 states have return successors, (46), 11 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-16 12:07:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:39,347 INFO L93 Difference]: Finished difference Result 1674 states and 2936 transitions. [2022-11-16 12:07:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:07:39,347 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 22 states have internal predecessors, (177), 7 states have call successors, (43), 2 states have call predecessors, (43), 10 states have return successors, (46), 11 states have call predecessors, (46), 7 states have call successors, (46) Word has length 335 [2022-11-16 12:07:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:39,354 INFO L225 Difference]: With dead ends: 1674 [2022-11-16 12:07:39,354 INFO L226 Difference]: Without dead ends: 1027 [2022-11-16 12:07:39,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 638 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:07:39,358 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 44 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 12710 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:39,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 12710 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:07:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-16 12:07:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 906. [2022-11-16 12:07:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 622 states have (on average 1.1864951768488745) internal successors, (738), 630 states have internal predecessors, (738), 213 states have call successors, (213), 52 states have call predecessors, (213), 69 states have return successors, (544), 224 states have call predecessors, (544), 211 states have call successors, (544) [2022-11-16 12:07:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1495 transitions. [2022-11-16 12:07:39,523 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1495 transitions. Word has length 335 [2022-11-16 12:07:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:39,524 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1495 transitions. [2022-11-16 12:07:39,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 22 states have internal predecessors, (177), 7 states have call successors, (43), 2 states have call predecessors, (43), 10 states have return successors, (46), 11 states have call predecessors, (46), 7 states have call successors, (46) [2022-11-16 12:07:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1495 transitions. [2022-11-16 12:07:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-16 12:07:39,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:39,528 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:39,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:39,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:07:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1386650422, now seen corresponding path program 2 times [2022-11-16 12:07:39,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906825537] [2022-11-16 12:07:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278426906] [2022-11-16 12:07:39,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:39,945 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:39,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:07:42,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:42,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:42,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3693 conjuncts, 214 conjunts are in the unsatisfiable core [2022-11-16 12:07:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:43,899 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:07:43,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:07:43,931 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:07:43,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:07:43,957 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:07:43,957 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 18 treesize of output 24 [2022-11-16 12:07:43,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:07:43,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:07:43,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:07:43,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:07:43,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:07:44,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-11-16 12:07:44,018 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 0 case distinctions, treesize of input 23 treesize of output 8 [2022-11-16 12:07:44,054 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 9 treesize of output 5 [2022-11-16 12:07:44,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:07:44,136 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-16 12:07:44,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 46 [2022-11-16 12:07:44,150 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 0 case distinctions, treesize of input 23 treesize of output 8 [2022-11-16 12:07:44,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:07:45,321 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10261 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10261))) (exists ((v_ArrVal_10259 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10259)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_10263 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10263)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:07:45,983 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10264 Int) (v_ArrVal_10266 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10267 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10266))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10264)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_10267) |c_#memory_int|))) is different from true [2022-11-16 12:07:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 441 proven. 66 refuted. 0 times theorem prover too weak. 144 trivial. 3 not checked. [2022-11-16 12:07:48,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:50,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:50,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906825537] [2022-11-16 12:07:50,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:50,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278426906] [2022-11-16 12:07:50,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278426906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:50,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:50,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-11-16 12:07:50,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003352452] [2022-11-16 12:07:50,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:50,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 12:07:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 12:07:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1767, Unknown=8, NotChecked=170, Total=2070 [2022-11-16 12:07:50,939 INFO L87 Difference]: Start difference. First operand 906 states and 1495 transitions. Second operand has 42 states, 39 states have (on average 4.205128205128205) internal successors, (164), 38 states have internal predecessors, (164), 17 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:07:51,817 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10261 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10261))) (exists ((v_ArrVal_10259 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10259)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_10263 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10263)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_10264 Int) (v_ArrVal_10266 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10267 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10266))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10264)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_10267) |c_#memory_int|)))) is different from true [2022-11-16 12:08:00,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:08:01,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:08:03,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:08:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:10,473 INFO L93 Difference]: Finished difference Result 2139 states and 3726 transitions. [2022-11-16 12:08:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-16 12:08:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 4.205128205128205) internal successors, (164), 38 states have internal predecessors, (164), 17 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 329 [2022-11-16 12:08:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:10,486 INFO L225 Difference]: With dead ends: 2139 [2022-11-16 12:08:10,486 INFO L226 Difference]: Without dead ends: 1448 [2022-11-16 12:08:10,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 362 SyntacticMatches, 9 SemanticMatches, 79 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=431, Invalid=5555, Unknown=32, NotChecked=462, Total=6480 [2022-11-16 12:08:10,493 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 416 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 6134 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 9446 SdHoareTripleChecker+Invalid, 17740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 6134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11364 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:10,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 9446 Invalid, 17740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [242 Valid, 6134 Invalid, 0 Unknown, 11364 Unchecked, 15.8s Time] [2022-11-16 12:08:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-11-16 12:08:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1117. [2022-11-16 12:08:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 785 states have (on average 1.173248407643312) internal successors, (921), 800 states have internal predecessors, (921), 240 states have call successors, (240), 67 states have call predecessors, (240), 90 states have return successors, (684), 250 states have call predecessors, (684), 238 states have call successors, (684) [2022-11-16 12:08:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1845 transitions. [2022-11-16 12:08:10,677 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1845 transitions. Word has length 329 [2022-11-16 12:08:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:10,678 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1845 transitions. [2022-11-16 12:08:10,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 4.205128205128205) internal successors, (164), 38 states have internal predecessors, (164), 17 states have call successors, (40), 7 states have call predecessors, (40), 12 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:08:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1845 transitions. [2022-11-16 12:08:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-16 12:08:10,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:10,684 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:10,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:08:10,899 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1701442423, now seen corresponding path program 5 times [2022-11-16 12:08:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:10,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001558546] [2022-11-16 12:08:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:10,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:10,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078865803] [2022-11-16 12:08:10,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:08:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:10,987 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:11,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:08:13,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:08:13,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 12:08:13,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 12:08:14,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001558546] [2022-11-16 12:08:14,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:14,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078865803] [2022-11-16 12:08:14,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078865803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:14,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:14,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:08:14,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453613236] [2022-11-16 12:08:14,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:14,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:08:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:08:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:08:14,057 INFO L87 Difference]: Start difference. First operand 1117 states and 1845 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 12 states have internal predecessors, (140), 3 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 12:08:17,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:08:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:19,579 INFO L93 Difference]: Finished difference Result 2041 states and 3534 transitions. [2022-11-16 12:08:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:08:19,580 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 12 states have internal predecessors, (140), 3 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) Word has length 347 [2022-11-16 12:08:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:19,588 INFO L225 Difference]: With dead ends: 2041 [2022-11-16 12:08:19,588 INFO L226 Difference]: Without dead ends: 1116 [2022-11-16 12:08:19,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:08:19,598 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 47 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6985 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:19,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6985 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 12:08:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-11-16 12:08:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1107. [2022-11-16 12:08:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 777 states have (on average 1.1711711711711712) internal successors, (910), 788 states have internal predecessors, (910), 239 states have call successors, (239), 67 states have call predecessors, (239), 89 states have return successors, (662), 252 states have call predecessors, (662), 237 states have call successors, (662) [2022-11-16 12:08:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1811 transitions. [2022-11-16 12:08:19,756 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1811 transitions. Word has length 347 [2022-11-16 12:08:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:19,757 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1811 transitions. [2022-11-16 12:08:19,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 12 states have internal predecessors, (140), 3 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (36), 5 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 12:08:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1811 transitions. [2022-11-16 12:08:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-16 12:08:19,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:19,792 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:19,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:20,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:20,003 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2017242252, now seen corresponding path program 1 times [2022-11-16 12:08:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:20,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322789084] [2022-11-16 12:08:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:20,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939125627] [2022-11-16 12:08:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:20,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:20,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:20,096 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:20,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:08:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:21,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3690 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-16 12:08:21,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:21,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:08:22,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:22,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:22,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:22,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:22,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:08:22,764 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11092 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_11092))) (exists ((v_ArrVal_11093 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_11093) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:08:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 297 proven. 35 refuted. 3 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 12:08:23,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:24,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:24,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322789084] [2022-11-16 12:08:24,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:24,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939125627] [2022-11-16 12:08:24,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939125627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:24,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:24,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 12:08:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180473470] [2022-11-16 12:08:24,965 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:08:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:08:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1069, Unknown=9, NotChecked=66, Total=1260 [2022-11-16 12:08:24,967 INFO L87 Difference]: Start difference. First operand 1107 states and 1811 transitions. Second operand has 32 states, 29 states have (on average 5.275862068965517) internal successors, (153), 28 states have internal predecessors, (153), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-16 12:08:29,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:08:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:33,171 INFO L93 Difference]: Finished difference Result 2430 states and 4184 transitions. [2022-11-16 12:08:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:08:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.275862068965517) internal successors, (153), 28 states have internal predecessors, (153), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) Word has length 329 [2022-11-16 12:08:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:33,184 INFO L225 Difference]: With dead ends: 2430 [2022-11-16 12:08:33,185 INFO L226 Difference]: Without dead ends: 1431 [2022-11-16 12:08:33,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 498 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=217, Invalid=1927, Unknown=22, NotChecked=90, Total=2256 [2022-11-16 12:08:33,193 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 296 mSDsluCounter, 6539 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 10616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6354 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:33,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 7121 Invalid, 10616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 4010 Invalid, 0 Unknown, 6354 Unchecked, 7.2s Time] [2022-11-16 12:08:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-16 12:08:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1144. [2022-11-16 12:08:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 805 states have (on average 1.168944099378882) internal successors, (941), 818 states have internal predecessors, (941), 243 states have call successors, (243), 69 states have call predecessors, (243), 94 states have return successors, (721), 257 states have call predecessors, (721), 241 states have call successors, (721) [2022-11-16 12:08:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1905 transitions. [2022-11-16 12:08:33,381 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1905 transitions. Word has length 329 [2022-11-16 12:08:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1905 transitions. [2022-11-16 12:08:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.275862068965517) internal successors, (153), 28 states have internal predecessors, (153), 13 states have call successors, (39), 7 states have call predecessors, (39), 10 states have return successors, (37), 9 states have call predecessors, (37), 13 states have call successors, (37) [2022-11-16 12:08:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1905 transitions. [2022-11-16 12:08:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-16 12:08:33,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:33,418 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:33,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:33,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:33,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:08:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1493922163, now seen corresponding path program 1 times [2022-11-16 12:08:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697164014] [2022-11-16 12:08:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:33,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:33,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736081357] [2022-11-16 12:08:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:33,729 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:33,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:08:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:35,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3729 conjuncts, 215 conjunts are in the unsatisfiable core [2022-11-16 12:08:35,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:35,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:08:35,720 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 [2022-11-16 12:08:35,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-16 12:08:39,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-11-16 12:08:39,951 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-16 12:08:39,952 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 [2022-11-16 12:08:41,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:41,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-16 12:08:42,815 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11540 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_11540))) is different from true [2022-11-16 12:08:49,153 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11542 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11542)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:08:49,163 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11542 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11542)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:08:51,329 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 12:08:51,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 12:08:51,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:08:51,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:08:51,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:51,365 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 12 treesize of output 1 [2022-11-16 12:08:51,372 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 9 treesize of output 7 [2022-11-16 12:08:51,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:51,482 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 12:08:51,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 107 [2022-11-16 12:08:51,500 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:08:51,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:08:51,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:08:51,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:08:51,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:08:51,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2022-11-16 12:08:51,725 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 114 treesize of output 87 [2022-11-16 12:08:51,733 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 9 treesize of output 7 [2022-11-16 12:10:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 376 proven. 37 refuted. 6 times theorem prover too weak. 234 trivial. 10 not checked. [2022-11-16 12:10:25,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697164014] [2022-11-16 12:10:26,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:26,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736081357] [2022-11-16 12:10:26,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736081357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:26,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:10:26,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-16 12:10:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886551831] [2022-11-16 12:10:26,035 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:26,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 12:10:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 12:10:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=982, Unknown=44, NotChecked=198, Total=1332 [2022-11-16 12:10:26,037 INFO L87 Difference]: Start difference. First operand 1144 states and 1905 transitions. Second operand has 36 states, 33 states have (on average 4.909090909090909) internal successors, (162), 31 states have internal predecessors, (162), 16 states have call successors, (40), 8 states have call predecessors, (40), 15 states have return successors, (39), 17 states have call predecessors, (39), 16 states have call successors, (39) [2022-11-16 12:10:40,661 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_11540 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_11540))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0))) (exists ((v_ArrVal_11542 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11542)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:10:56,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:58,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:04,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:06,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:07,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:09,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:10,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:12,420 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 [] [2022-11-16 12:11:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:15,733 INFO L93 Difference]: Finished difference Result 2468 states and 4283 transitions. [2022-11-16 12:11:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:11:15,734 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.909090909090909) internal successors, (162), 31 states have internal predecessors, (162), 16 states have call successors, (40), 8 states have call predecessors, (40), 15 states have return successors, (39), 17 states have call predecessors, (39), 16 states have call successors, (39) Word has length 335 [2022-11-16 12:11:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:15,753 INFO L225 Difference]: With dead ends: 2468 [2022-11-16 12:11:15,753 INFO L226 Difference]: Without dead ends: 1579 [2022-11-16 12:11:15,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 369 SyntacticMatches, 10 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 136.9s TimeCoverageRelationStatistics Valid=162, Invalid=1675, Unknown=71, NotChecked=348, Total=2256 [2022-11-16 12:11:15,767 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 307 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 252 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 13463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 9474 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:15,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 6527 Invalid, 13463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 3734 Invalid, 3 Unknown, 9474 Unchecked, 21.2s Time] [2022-11-16 12:11:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2022-11-16 12:11:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1259. [2022-11-16 12:11:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 891 states have (on average 1.1616161616161615) internal successors, (1035), 904 states have internal predecessors, (1035), 258 states have call successors, (258), 79 states have call predecessors, (258), 108 states have return successors, (810), 276 states have call predecessors, (810), 256 states have call successors, (810) [2022-11-16 12:11:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2103 transitions. [2022-11-16 12:11:15,987 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2103 transitions. Word has length 335 [2022-11-16 12:11:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:15,988 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 2103 transitions. [2022-11-16 12:11:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.909090909090909) internal successors, (162), 31 states have internal predecessors, (162), 16 states have call successors, (40), 8 states have call predecessors, (40), 15 states have return successors, (39), 17 states have call predecessors, (39), 16 states have call successors, (39) [2022-11-16 12:11:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2103 transitions. [2022-11-16 12:11:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-16 12:11:15,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:15,996 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:16,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:16,211 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -363590314, now seen corresponding path program 1 times [2022-11-16 12:11:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561398110] [2022-11-16 12:11:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:16,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:16,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125341748] [2022-11-16 12:11:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:16,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:16,385 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:16,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 12:11:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:18,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 12:11:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:11:18,567 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 [2022-11-16 12:11:18,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:11:18,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:11:18,829 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 21 [2022-11-16 12:11:18,995 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12016 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12016)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:11:19,008 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12016 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12016)))) is different from true [2022-11-16 12:11:23,262 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12018 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12018)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:11:33,794 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:11:33,794 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 1 case distinctions, treesize of input 27 treesize of output 19 [2022-11-16 12:11:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 10 not checked. [2022-11-16 12:11:38,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:11:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:40,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561398110] [2022-11-16 12:11:40,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:11:40,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125341748] [2022-11-16 12:11:40,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125341748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:11:40,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:11:40,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-16 12:11:40,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043530924] [2022-11-16 12:11:40,942 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:11:40,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:11:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:11:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=596, Unknown=34, NotChecked=156, Total=870 [2022-11-16 12:11:40,944 INFO L87 Difference]: Start difference. First operand 1259 states and 2103 transitions. Second operand has 29 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-16 12:11:45,736 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12016 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12016)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12018 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12018)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:12:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:02,142 INFO L93 Difference]: Finished difference Result 2545 states and 4393 transitions. [2022-11-16 12:12:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:12:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) Word has length 340 [2022-11-16 12:12:02,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:02,159 INFO L225 Difference]: With dead ends: 2545 [2022-11-16 12:12:02,160 INFO L226 Difference]: Without dead ends: 1418 [2022-11-16 12:12:02,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 516 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=119, Invalid=981, Unknown=38, NotChecked=268, Total=1406 [2022-11-16 12:12:02,170 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 268 mSDsluCounter, 5720 mSDsCounter, 0 mSdLazyCounter, 3603 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 6289 SdHoareTripleChecker+Invalid, 10069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6259 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:02,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 6289 Invalid, 10069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 3603 Invalid, 0 Unknown, 6259 Unchecked, 8.4s Time] [2022-11-16 12:12:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-11-16 12:12:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1306. [2022-11-16 12:12:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 937 states have (on average 1.1664887940234792) internal successors, (1093), 952 states have internal predecessors, (1093), 257 states have call successors, (257), 78 states have call predecessors, (257), 110 states have return successors, (877), 276 states have call predecessors, (877), 255 states have call successors, (877) [2022-11-16 12:12:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2227 transitions. [2022-11-16 12:12:02,460 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2227 transitions. Word has length 340 [2022-11-16 12:12:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:02,461 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2227 transitions. [2022-11-16 12:12:02,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.884615384615385) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (40), 5 states have call predecessors, (40), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2022-11-16 12:12:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2227 transitions. [2022-11-16 12:12:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-16 12:12:02,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:02,471 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:02,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-11-16 12:12:02,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 12:12:02,692 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1354898693, now seen corresponding path program 2 times [2022-11-16 12:12:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:02,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691113260] [2022-11-16 12:12:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:02,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:02,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970370617] [2022-11-16 12:12:02,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:12:02,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:02,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:02,808 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:02,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 12:12:05,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:12:05,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:12:05,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 3729 conjuncts, 268 conjunts are in the unsatisfiable core [2022-11-16 12:12:05,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:06,411 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:12:06,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:12:06,439 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:12:06,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:12:06,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:12:06,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:12:06,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:12:06,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:12:06,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:12:06,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:12:06,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:12:06,623 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-16 12:12:06,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 46 [2022-11-16 12:12:06,630 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 0 case distinctions, treesize of input 23 treesize of output 8 [2022-11-16 12:12:07,658 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12481 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12481)))) (exists ((v_ArrVal_12479 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12479)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:12:09,009 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12485 Int) (v_ArrVal_12486 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12486))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12485)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:12:14,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,741 INFO L321 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-11-16 12:12:14,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 185 [2022-11-16 12:12:14,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:12:14,796 INFO L321 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-11-16 12:12:14,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 129 [2022-11-16 12:12:14,835 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 12:12:14,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 45 [2022-11-16 12:12:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 446 proven. 24 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2022-11-16 12:12:14,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:15,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691113260] [2022-11-16 12:12:15,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:15,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970370617] [2022-11-16 12:12:15,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970370617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:15,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:15,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2022-11-16 12:12:15,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929291573] [2022-11-16 12:12:15,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:15,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:12:15,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:12:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1561, Unknown=50, NotChecked=162, Total=1892 [2022-11-16 12:12:15,475 INFO L87 Difference]: Start difference. First operand 1306 states and 2227 transitions. Second operand has 43 states, 40 states have (on average 4.075) internal successors, (163), 37 states have internal predecessors, (163), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 14 states have call predecessors, (40), 13 states have call successors, (40) [2022-11-16 12:12:16,498 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12481 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12481)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_12485 Int) (v_ArrVal_12486 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12486))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12485)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_12479 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12479)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:12:28,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:12:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:34,536 INFO L93 Difference]: Finished difference Result 2646 states and 4807 transitions. [2022-11-16 12:12:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 12:12:34,537 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 4.075) internal successors, (163), 37 states have internal predecessors, (163), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 14 states have call predecessors, (40), 13 states have call successors, (40) Word has length 335 [2022-11-16 12:12:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:34,553 INFO L225 Difference]: With dead ends: 2646 [2022-11-16 12:12:34,553 INFO L226 Difference]: Without dead ends: 1696 [2022-11-16 12:12:34,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=460, Invalid=5794, Unknown=78, NotChecked=474, Total=6806 [2022-11-16 12:12:34,560 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 439 mSDsluCounter, 8755 mSDsCounter, 0 mSdLazyCounter, 7008 mSolverCounterSat, 547 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 9339 SdHoareTripleChecker+Invalid, 18450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 7008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10894 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:34,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 9339 Invalid, 18450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 7008 Invalid, 1 Unknown, 10894 Unchecked, 9.9s Time] [2022-11-16 12:12:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2022-11-16 12:12:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1295. [2022-11-16 12:12:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 930 states have (on average 1.167741935483871) internal successors, (1086), 944 states have internal predecessors, (1086), 254 states have call successors, (254), 77 states have call predecessors, (254), 109 states have return successors, (860), 274 states have call predecessors, (860), 252 states have call successors, (860) [2022-11-16 12:12:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 2200 transitions. [2022-11-16 12:12:34,853 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 2200 transitions. Word has length 335 [2022-11-16 12:12:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 2200 transitions. [2022-11-16 12:12:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 4.075) internal successors, (163), 37 states have internal predecessors, (163), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (40), 14 states have call predecessors, (40), 13 states have call successors, (40) [2022-11-16 12:12:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 2200 transitions. [2022-11-16 12:12:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-16 12:12:34,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:34,864 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:34,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:12:35,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 12:12:35,087 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:35,088 INFO L85 PathProgramCache]: Analyzing trace with hash 997109160, now seen corresponding path program 1 times [2022-11-16 12:12:35,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:35,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45496277] [2022-11-16 12:12:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:35,221 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:12:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649887261] [2022-11-16 12:12:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:12:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:12:35,224 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:12:35,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 12:12:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:37,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 3733 conjuncts, 185 conjunts are in the unsatisfiable core [2022-11-16 12:12:37,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:37,786 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:12:37,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:12:37,815 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:12:37,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:12:37,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:12:37,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:12:37,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:12:37,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:12:37,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:12:37,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2022-11-16 12:12:37,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:12:38,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:12:38,073 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-16 12:12:38,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 44 [2022-11-16 12:12:40,128 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12932 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12932)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_12930 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12930))))) is different from true [2022-11-16 12:12:40,673 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12937 Int) (v_ArrVal_12936 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12937)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12936))))) is different from true [2022-11-16 12:12:40,698 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12937 Int) (v_ArrVal_12936 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12936)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12937))))) is different from true [2022-11-16 12:12:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 442 proven. 18 refuted. 0 times theorem prover too weak. 178 trivial. 25 not checked. [2022-11-16 12:12:42,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:44,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45496277] [2022-11-16 12:12:44,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:44,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649887261] [2022-11-16 12:12:44,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649887261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:12:44,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:12:44,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-16 12:12:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632167796] [2022-11-16 12:12:44,124 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:44,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 12:12:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 12:12:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1169, Unknown=3, NotChecked=210, Total=1482 [2022-11-16 12:12:44,126 INFO L87 Difference]: Start difference. First operand 1295 states and 2200 transitions. Second operand has 35 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 13 states have call successors, (44), 5 states have call predecessors, (44), 11 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2022-11-16 12:12:44,818 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12937 Int) (v_ArrVal_12936 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12937)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12936))))) (exists ((v_ArrVal_12932 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12932)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_12930 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_12930))))) is different from true [2022-11-16 12:12:44,849 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_12932 Int) (v_ArrVal_12930 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_12932)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base|) 0 v_ArrVal_12930)) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0))) (exists ((v_ArrVal_12937 Int) (v_ArrVal_12936 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12936)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_12937)))))) is different from true [2022-11-16 12:12:48,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:12:51,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:12:54,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:12:55,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:03,168 INFO L93 Difference]: Finished difference Result 2602 states and 4737 transitions. [2022-11-16 12:13:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 12:13:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 13 states have call successors, (44), 5 states have call predecessors, (44), 11 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) Word has length 341 [2022-11-16 12:13:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:03,183 INFO L225 Difference]: With dead ends: 2602 [2022-11-16 12:13:03,184 INFO L226 Difference]: Without dead ends: 1672 [2022-11-16 12:13:03,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 392 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=249, Invalid=2958, Unknown=5, NotChecked=570, Total=3782 [2022-11-16 12:13:03,193 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 308 mSDsluCounter, 8908 mSDsCounter, 0 mSdLazyCounter, 6092 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 9552 SdHoareTripleChecker+Invalid, 12743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 6092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6374 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:03,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 9552 Invalid, 12743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [277 Valid, 6092 Invalid, 0 Unknown, 6374 Unchecked, 17.6s Time] [2022-11-16 12:13:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-16 12:13:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1383. [2022-11-16 12:13:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1008 states have (on average 1.1706349206349207) internal successors, (1180), 1021 states have internal predecessors, (1180), 259 states have call successors, (259), 79 states have call predecessors, (259), 114 states have return successors, (934), 283 states have call predecessors, (934), 257 states have call successors, (934) [2022-11-16 12:13:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2373 transitions. [2022-11-16 12:13:03,477 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2373 transitions. Word has length 341 [2022-11-16 12:13:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:03,477 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2373 transitions. [2022-11-16 12:13:03,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 13 states have call successors, (44), 5 states have call predecessors, (44), 11 states have return successors, (43), 13 states have call predecessors, (43), 13 states have call successors, (43) [2022-11-16 12:13:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2373 transitions. [2022-11-16 12:13:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-16 12:13:03,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:03,488 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:03,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:03,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:03,710 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1636874248, now seen corresponding path program 1 times [2022-11-16 12:13:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203176277] [2022-11-16 12:13:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:03,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:03,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439949536] [2022-11-16 12:13:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:03,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:03,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:03,884 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 12:13:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:06,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3758 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-16 12:13:06,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:08,962 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_50| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_37| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_50|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_37|)) 0))) (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_50| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_37| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_50|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_37|)) 0)))) is different from true [2022-11-16 12:13:09,928 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_13384 Int) (v_ArrVal_13382 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13384))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13382))))) is different from true [2022-11-16 12:13:09,954 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_13384 Int) (v_ArrVal_13382 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_13382)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_13384))))) is different from true [2022-11-16 12:13:10,002 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 29 treesize of output 28 [2022-11-16 12:13:10,005 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 29 treesize of output 28 [2022-11-16 12:13:10,305 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_13387 Int) (v_ArrVal_13388 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13388)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13387))))) is different from true [2022-11-16 12:13:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 338 proven. 21 refuted. 0 times theorem prover too weak. 277 trivial. 30 not checked. [2022-11-16 12:13:19,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:22,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203176277] [2022-11-16 12:13:22,328 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:22,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439949536] [2022-11-16 12:13:22,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439949536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:13:22,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:13:22,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-16 12:13:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458001287] [2022-11-16 12:13:22,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:13:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:13:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=509, Unknown=33, NotChecked=196, Total=812 [2022-11-16 12:13:22,331 INFO L87 Difference]: Start difference. First operand 1383 states and 2373 transitions. Second operand has 28 states, 25 states have (on average 6.64) internal successors, (166), 27 states have internal predecessors, (166), 14 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (41), 11 states have call predecessors, (41), 13 states have call successors, (41) [2022-11-16 12:13:23,010 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_13384 Int) (v_ArrVal_13382 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13384))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13382))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_13387 Int) (v_ArrVal_13388 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13388)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_13387)))))) is different from true [2022-11-16 12:14:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:18,915 INFO L93 Difference]: Finished difference Result 2718 states and 4962 transitions. [2022-11-16 12:14:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:14:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 6.64) internal successors, (166), 27 states have internal predecessors, (166), 14 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (41), 11 states have call predecessors, (41), 13 states have call successors, (41) Word has length 346 [2022-11-16 12:14:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:18,930 INFO L225 Difference]: With dead ends: 2718 [2022-11-16 12:14:18,931 INFO L226 Difference]: Without dead ends: 1738 [2022-11-16 12:14:18,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 321 SyntacticMatches, 15 SemanticMatches, 42 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=159, Invalid=1294, Unknown=49, NotChecked=390, Total=1892 [2022-11-16 12:14:18,938 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 389 mSDsluCounter, 6437 mSDsCounter, 0 mSdLazyCounter, 5976 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 7065 SdHoareTripleChecker+Invalid, 12288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 5976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6024 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:18,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 7065 Invalid, 12288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 5976 Invalid, 0 Unknown, 6024 Unchecked, 13.8s Time] [2022-11-16 12:14:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2022-11-16 12:14:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1439. [2022-11-16 12:14:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1051 states have (on average 1.170313986679353) internal successors, (1230), 1060 states have internal predecessors, (1230), 269 states have call successors, (269), 83 states have call predecessors, (269), 117 states have return successors, (951), 296 states have call predecessors, (951), 267 states have call successors, (951) [2022-11-16 12:14:19,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2450 transitions. [2022-11-16 12:14:19,219 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2450 transitions. Word has length 346 [2022-11-16 12:14:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:19,220 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2450 transitions. [2022-11-16 12:14:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 6.64) internal successors, (166), 27 states have internal predecessors, (166), 14 states have call successors, (43), 6 states have call predecessors, (43), 10 states have return successors, (41), 11 states have call predecessors, (41), 13 states have call successors, (41) [2022-11-16 12:14:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2450 transitions. [2022-11-16 12:14:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-16 12:14:19,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:19,231 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:19,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-16 12:14:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:19,453 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash -498209322, now seen corresponding path program 1 times [2022-11-16 12:14:19,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:19,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224144469] [2022-11-16 12:14:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:19,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:19,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248683282] [2022-11-16 12:14:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:19,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:19,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:19,591 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:19,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-16 12:14:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:21,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:14:21,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-16 12:14:22,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:22,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:22,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224144469] [2022-11-16 12:14:22,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:22,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248683282] [2022-11-16 12:14:22,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248683282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:22,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:22,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:14:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710798268] [2022-11-16 12:14:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:14:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:14:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:14:22,141 INFO L87 Difference]: Start difference. First operand 1439 states and 2450 transitions. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 9 states have internal predecessors, (151), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (39), 5 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-16 12:14:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:22,572 INFO L93 Difference]: Finished difference Result 2637 states and 4623 transitions. [2022-11-16 12:14:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:14:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 9 states have internal predecessors, (151), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (39), 5 states have call predecessors, (39), 2 states have call successors, (39) Word has length 360 [2022-11-16 12:14:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:22,590 INFO L225 Difference]: With dead ends: 2637 [2022-11-16 12:14:22,591 INFO L226 Difference]: Without dead ends: 1446 [2022-11-16 12:14:22,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:14:22,603 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 16 mSDsluCounter, 6436 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7086 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:22,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7086 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:14:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2022-11-16 12:14:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1303. [2022-11-16 12:14:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 948 states have (on average 1.1719409282700421) internal successors, (1111), 956 states have internal predecessors, (1111), 253 states have call successors, (253), 72 states have call predecessors, (253), 100 states have return successors, (815), 275 states have call predecessors, (815), 251 states have call successors, (815) [2022-11-16 12:14:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2179 transitions. [2022-11-16 12:14:22,815 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2179 transitions. Word has length 360 [2022-11-16 12:14:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:22,815 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2179 transitions. [2022-11-16 12:14:22,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 9 states have internal predecessors, (151), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (39), 5 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-16 12:14:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2179 transitions. [2022-11-16 12:14:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-16 12:14:22,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:22,825 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:22,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 12:14:23,039 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash -16905720, now seen corresponding path program 2 times [2022-11-16 12:14:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:23,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356715882] [2022-11-16 12:14:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:23,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:14:23,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264993053] [2022-11-16 12:14:23,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:23,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:23,154 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:23,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-16 12:14:26,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:26,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:26,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 3758 conjuncts, 153 conjunts are in the unsatisfiable core [2022-11-16 12:14:26,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:29,251 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:14:29,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:14:29,285 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-16 12:14:29,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 66 [2022-11-16 12:14:29,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:29,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:14:29,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:29,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 26 treesize of output 38 [2022-11-16 12:14:29,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:14:29,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:14:29,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-16 12:14:29,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-16 12:14:29,456 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 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-16 12:14:29,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:29,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 12:14:29,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:29,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:29,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 11 [2022-11-16 12:14:30,603 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_14201 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_14201)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_14203 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_14203))))) is different from true [2022-11-16 12:14:31,891 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 [2022-11-16 12:14:31,895 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 [2022-11-16 12:14:33,909 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_43| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_56| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_56|) (+ |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_43| 80)) 0))) (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_43| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_56| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_56|) (+ |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_43| 80)) 0)))) is different from true [2022-11-16 12:14:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 481 proven. 40 refuted. 0 times theorem prover too weak. 137 trivial. 8 not checked. [2022-11-16 12:14:34,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:35,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356715882] [2022-11-16 12:14:35,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:14:35,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264993053] [2022-11-16 12:14:35,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264993053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:35,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:14:35,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-11-16 12:14:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446803332] [2022-11-16 12:14:35,376 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:14:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:14:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=770, Unknown=12, NotChecked=114, Total=992 [2022-11-16 12:14:35,378 INFO L87 Difference]: Start difference. First operand 1303 states and 2179 transitions. Second operand has 31 states, 29 states have (on average 6.206896551724138) internal successors, (180), 30 states have internal predecessors, (180), 18 states have call successors, (45), 8 states have call predecessors, (45), 13 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) [2022-11-16 12:14:52,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:14:55,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:14:57,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:15:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:17,495 INFO L93 Difference]: Finished difference Result 2637 states and 4630 transitions. [2022-11-16 12:15:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 12:15:17,495 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 6.206896551724138) internal successors, (180), 30 states have internal predecessors, (180), 18 states have call successors, (45), 8 states have call predecessors, (45), 13 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) Word has length 346 [2022-11-16 12:15:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:17,510 INFO L225 Difference]: With dead ends: 2637 [2022-11-16 12:15:17,511 INFO L226 Difference]: Without dead ends: 1705 [2022-11-16 12:15:17,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 391 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=279, Invalid=2776, Unknown=33, NotChecked=218, Total=3306 [2022-11-16 12:15:17,519 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 508 mSDsluCounter, 5923 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 6557 SdHoareTripleChecker+Invalid, 10710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5176 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:17,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 6557 Invalid, 10710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [539 Valid, 4995 Invalid, 0 Unknown, 5176 Unchecked, 14.3s Time] [2022-11-16 12:15:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-11-16 12:15:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1372. [2022-11-16 12:15:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1005 states have (on average 1.173134328358209) internal successors, (1179), 1014 states have internal predecessors, (1179), 260 states have call successors, (260), 76 states have call predecessors, (260), 105 states have return successors, (842), 282 states have call predecessors, (842), 258 states have call successors, (842) [2022-11-16 12:15:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2281 transitions. [2022-11-16 12:15:17,706 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2281 transitions. Word has length 346 [2022-11-16 12:15:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 2281 transitions. [2022-11-16 12:15:17,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 6.206896551724138) internal successors, (180), 30 states have internal predecessors, (180), 18 states have call successors, (45), 8 states have call predecessors, (45), 13 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) [2022-11-16 12:15:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2281 transitions. [2022-11-16 12:15:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-16 12:15:17,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:17,716 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:17,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 12:15:17,935 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1144035471, now seen corresponding path program 1 times [2022-11-16 12:15:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:17,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722906538] [2022-11-16 12:15:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:17,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:18,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:18,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475029520] [2022-11-16 12:15:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:18,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:18,045 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:18,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-16 12:15:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3761 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:15:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-16 12:15:19,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722906538] [2022-11-16 12:15:19,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:19,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475029520] [2022-11-16 12:15:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475029520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:19,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:15:19,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819948415] [2022-11-16 12:15:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:15:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:15:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:15:19,967 INFO L87 Difference]: Start difference. First operand 1372 states and 2281 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-16 12:15:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:20,153 INFO L93 Difference]: Finished difference Result 2442 states and 4285 transitions. [2022-11-16 12:15:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:15:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 346 [2022-11-16 12:15:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:20,193 INFO L225 Difference]: With dead ends: 2442 [2022-11-16 12:15:20,193 INFO L226 Difference]: Without dead ends: 1101 [2022-11-16 12:15:20,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:15:20,198 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 7 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:20,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1863 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:15:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-11-16 12:15:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 835. [2022-11-16 12:15:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 574 states have (on average 1.1881533101045296) internal successors, (682), 580 states have internal predecessors, (682), 200 states have call successors, (200), 43 states have call predecessors, (200), 59 states have return successors, (450), 212 states have call predecessors, (450), 198 states have call successors, (450) [2022-11-16 12:15:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1332 transitions. [2022-11-16 12:15:20,288 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1332 transitions. Word has length 346 [2022-11-16 12:15:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:20,288 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1332 transitions. [2022-11-16 12:15:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-16 12:15:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1332 transitions. [2022-11-16 12:15:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-16 12:15:20,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:20,293 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:20,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 12:15:20,507 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:20,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1683618569, now seen corresponding path program 1 times [2022-11-16 12:15:20,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:20,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556464626] [2022-11-16 12:15:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:20,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260044309] [2022-11-16 12:15:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:20,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:20,629 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:20,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 12:15:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:22,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 3713 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-16 12:15:22,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:22,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:15:23,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:15:23,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:15:23,412 WARN L855 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) is different from true [2022-11-16 12:15:23,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:15:23,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:15:23,562 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 [2022-11-16 12:15:23,662 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 32 |c_ensure_array_list_has_allocated_data_member_#in~list.offset|))) (and (exists ((v_ArrVal_15056 Int) (v_ArrVal_15061 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_15056) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_15061)))) (exists ((|bounded_malloc_#res.base| Int)) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| 1))) (exists ((v_ArrVal_15062 Int) (v_ArrVal_15058 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) .cse0 v_ArrVal_15058) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_15062)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:15:23,679 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 28 treesize of output 31 [2022-11-16 12:15:23,688 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 28 treesize of output 31 [2022-11-16 12:15:23,705 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:15:23,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:15:23,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:23,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:15:23,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:23,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:15:24,055 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_15068 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_15068))) (exists ((v_ArrVal_15067 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_15067) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:15:25,047 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 63 treesize of output 51 [2022-11-16 12:15:25,052 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 61 treesize of output 49 [2022-11-16 12:15:25,056 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 35 treesize of output 31 [2022-11-16 12:15:25,060 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 31 treesize of output 27 [2022-11-16 12:15:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 319 proven. 26 refuted. 3 times theorem prover too weak. 319 trivial. 2 not checked. [2022-11-16 12:15:25,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556464626] [2022-11-16 12:15:26,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:26,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260044309] [2022-11-16 12:15:26,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260044309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:26,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:15:26,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-16 12:15:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938516436] [2022-11-16 12:15:26,215 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:26,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 12:15:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 12:15:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1213, Unknown=9, NotChecked=216, Total=1560 [2022-11-16 12:15:26,217 INFO L87 Difference]: Start difference. First operand 835 states and 1332 transitions. Second operand has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (39), 7 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-16 12:15:29,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:15:32,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:15:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:35,958 INFO L93 Difference]: Finished difference Result 1801 states and 2946 transitions. [2022-11-16 12:15:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:15:35,959 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (39), 7 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 15 states have call successors, (37) Word has length 331 [2022-11-16 12:15:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:35,966 INFO L225 Difference]: With dead ends: 1801 [2022-11-16 12:15:35,967 INFO L226 Difference]: Without dead ends: 1045 [2022-11-16 12:15:35,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 492 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=201, Invalid=2040, Unknown=27, NotChecked=282, Total=2550 [2022-11-16 12:15:35,972 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 276 mSDsluCounter, 5578 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 6142 SdHoareTripleChecker+Invalid, 11675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7645 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:35,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 6142 Invalid, 11675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 3778 Invalid, 0 Unknown, 7645 Unchecked, 8.9s Time] [2022-11-16 12:15:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-11-16 12:15:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 835. [2022-11-16 12:15:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 574 states have (on average 1.1881533101045296) internal successors, (682), 580 states have internal predecessors, (682), 200 states have call successors, (200), 43 states have call predecessors, (200), 59 states have return successors, (449), 212 states have call predecessors, (449), 198 states have call successors, (449) [2022-11-16 12:15:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1331 transitions. [2022-11-16 12:15:36,073 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1331 transitions. Word has length 331 [2022-11-16 12:15:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:36,074 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1331 transitions. [2022-11-16 12:15:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.166666666666667) internal successors, (155), 29 states have internal predecessors, (155), 15 states have call successors, (39), 7 states have call predecessors, (39), 11 states have return successors, (37), 11 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-16 12:15:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1331 transitions. [2022-11-16 12:15:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-16 12:15:36,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:36,077 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:36,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:36,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 12:15:36,278 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:36,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:36,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2127709778, now seen corresponding path program 1 times [2022-11-16 12:15:36,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:36,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297760705] [2022-11-16 12:15:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:36,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:36,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:36,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288199783] [2022-11-16 12:15:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:36,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:36,375 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:36,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-16 12:15:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:38,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-16 12:15:38,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:38,778 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15509 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15507 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15507)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15509))))) is different from true [2022-11-16 12:15:38,799 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15509 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15507 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_15507)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_15509)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:15:38,876 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:15:38,877 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 33 treesize of output 42 [2022-11-16 12:15:38,903 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 12:15:38,903 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 27 treesize of output 36 [2022-11-16 12:15:39,945 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15513 Int) (v_ArrVal_15511 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15513)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15511)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:15:48,573 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 29 treesize of output 28 [2022-11-16 12:15:48,577 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 29 treesize of output 28 [2022-11-16 12:15:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 402 proven. 5 refuted. 0 times theorem prover too weak. 246 trivial. 19 not checked. [2022-11-16 12:15:48,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:50,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:50,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297760705] [2022-11-16 12:15:50,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:50,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288199783] [2022-11-16 12:15:50,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288199783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:50,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:15:50,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-16 12:15:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819792750] [2022-11-16 12:15:50,996 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:50,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:15:50,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:15:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=508, Unknown=32, NotChecked=144, Total=756 [2022-11-16 12:15:50,998 INFO L87 Difference]: Start difference. First operand 835 states and 1331 transitions. Second operand has 27 states, 24 states have (on average 6.791666666666667) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-16 12:15:51,453 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_15509 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15507 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15507)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15509))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_15513 Int) (v_ArrVal_15511 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15513)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_15511)) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:15:56,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:16:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:02,913 INFO L93 Difference]: Finished difference Result 1658 states and 2781 transitions. [2022-11-16 12:16:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:16:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.791666666666667) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) Word has length 336 [2022-11-16 12:16:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:02,920 INFO L225 Difference]: With dead ends: 1658 [2022-11-16 12:16:02,920 INFO L226 Difference]: Without dead ends: 1031 [2022-11-16 12:16:02,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 311 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=134, Invalid=1036, Unknown=36, NotChecked=276, Total=1482 [2022-11-16 12:16:02,923 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 166 mSDsluCounter, 8732 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3980 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:02,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 9433 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1539 Invalid, 0 Unknown, 3980 Unchecked, 7.2s Time] [2022-11-16 12:16:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-16 12:16:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 918. [2022-11-16 12:16:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 633 states have (on average 1.1832543443917851) internal successors, (749), 643 states have internal predecessors, (749), 215 states have call successors, (215), 49 states have call predecessors, (215), 68 states have return successors, (533), 226 states have call predecessors, (533), 213 states have call successors, (533) [2022-11-16 12:16:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1497 transitions. [2022-11-16 12:16:03,029 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1497 transitions. Word has length 336 [2022-11-16 12:16:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:03,029 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1497 transitions. [2022-11-16 12:16:03,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.791666666666667) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-16 12:16:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1497 transitions. [2022-11-16 12:16:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:16:03,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:03,033 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:03,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:03,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:03,233 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1082248212, now seen corresponding path program 2 times [2022-11-16 12:16:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:03,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166775013] [2022-11-16 12:16:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:03,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562145315] [2022-11-16 12:16:03,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:16:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:03,323 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:03,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 12:16:05,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:16:05,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:05,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-16 12:16:05,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:05,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:05,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:16:06,328 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 12:16:06,331 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 [2022-11-16 12:16:06,366 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 [2022-11-16 12:16:06,368 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 12:16:06,416 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_15956 Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_15956)))) (exists ((v_ArrVal_15959 Int) (v_ArrVal_15958 Int) (ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (= (store |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (store (select |c_old(#memory_int)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) (+ ensure_array_list_has_allocated_data_member_~list.offset 32) v_ArrVal_15958) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_15959)) |c_#memory_int|) (<= |c_ensure_array_list_has_allocated_data_member_#in~list.offset| ensure_array_list_has_allocated_data_member_~list.offset)))) is different from true [2022-11-16 12:16:06,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:06,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:06,448 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 28 treesize of output 31 [2022-11-16 12:16:06,475 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:16:06,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 12:16:06,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:06,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:16:06,770 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_15963 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_15963) |c_#memory_int|)) is different from true [2022-11-16 12:16:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 321 proven. 32 refuted. 3 times theorem prover too weak. 322 trivial. 2 not checked. [2022-11-16 12:16:07,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:08,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166775013] [2022-11-16 12:16:08,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:08,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562145315] [2022-11-16 12:16:08,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562145315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:08,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:08,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-11-16 12:16:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200032599] [2022-11-16 12:16:08,426 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 12:16:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 12:16:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1276, Unknown=14, NotChecked=146, Total=1560 [2022-11-16 12:16:08,427 INFO L87 Difference]: Start difference. First operand 918 states and 1497 transitions. Second operand has 33 states, 30 states have (on average 5.266666666666667) internal successors, (158), 28 states have internal predecessors, (158), 15 states have call successors, (40), 7 states have call predecessors, (40), 11 states have return successors, (38), 11 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-16 12:16:11,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:16:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:17,430 INFO L93 Difference]: Finished difference Result 1993 states and 3344 transitions. [2022-11-16 12:16:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:16:17,431 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 5.266666666666667) internal successors, (158), 28 states have internal predecessors, (158), 15 states have call successors, (40), 7 states have call predecessors, (40), 11 states have return successors, (38), 11 states have call predecessors, (38), 15 states have call successors, (38) Word has length 338 [2022-11-16 12:16:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:17,440 INFO L225 Difference]: With dead ends: 1993 [2022-11-16 12:16:17,440 INFO L226 Difference]: Without dead ends: 1154 [2022-11-16 12:16:17,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 502 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=173, Invalid=1877, Unknown=28, NotChecked=178, Total=2256 [2022-11-16 12:16:17,446 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 392 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 3839 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 9705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 3839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5362 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:17,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 5382 Invalid, 9705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 3839 Invalid, 0 Unknown, 5362 Unchecked, 8.2s Time] [2022-11-16 12:16:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-16 12:16:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 929. [2022-11-16 12:16:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 641 states have (on average 1.1809672386895476) internal successors, (757), 652 states have internal predecessors, (757), 216 states have call successors, (216), 50 states have call predecessors, (216), 70 states have return successors, (559), 227 states have call predecessors, (559), 214 states have call successors, (559) [2022-11-16 12:16:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1532 transitions. [2022-11-16 12:16:17,617 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1532 transitions. Word has length 338 [2022-11-16 12:16:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:17,617 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1532 transitions. [2022-11-16 12:16:17,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 5.266666666666667) internal successors, (158), 28 states have internal predecessors, (158), 15 states have call successors, (40), 7 states have call predecessors, (40), 11 states have return successors, (38), 11 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-16 12:16:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1532 transitions. [2022-11-16 12:16:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-11-16 12:16:17,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:17,622 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:17,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:17,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:17,843 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1884085020, now seen corresponding path program 1 times [2022-11-16 12:16:17,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:17,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331424882] [2022-11-16 12:16:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:17,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:17,930 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:17,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161821789] [2022-11-16 12:16:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:17,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:17,931 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:17,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-16 12:16:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 3724 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:16:19,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-16 12:16:19,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331424882] [2022-11-16 12:16:19,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161821789] [2022-11-16 12:16:19,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161821789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:19,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:19,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:16:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298161424] [2022-11-16 12:16:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:19,953 INFO L87 Difference]: Start difference. First operand 929 states and 1532 transitions. Second operand has 10 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 12:16:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:20,662 INFO L93 Difference]: Finished difference Result 1847 states and 3186 transitions. [2022-11-16 12:16:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 334 [2022-11-16 12:16:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:20,671 INFO L225 Difference]: With dead ends: 1847 [2022-11-16 12:16:20,671 INFO L226 Difference]: Without dead ends: 983 [2022-11-16 12:16:20,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:20,677 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 5 mSDsluCounter, 4713 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:20,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5319 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:16:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-11-16 12:16:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 956. [2022-11-16 12:16:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 662 states have (on average 1.1752265861027191) internal successors, (778), 674 states have internal predecessors, (778), 216 states have call successors, (216), 50 states have call predecessors, (216), 76 states have return successors, (644), 232 states have call predecessors, (644), 214 states have call successors, (644) [2022-11-16 12:16:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1638 transitions. [2022-11-16 12:16:20,900 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1638 transitions. Word has length 334 [2022-11-16 12:16:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:20,902 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1638 transitions. [2022-11-16 12:16:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 12:16:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1638 transitions. [2022-11-16 12:16:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-16 12:16:20,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:20,908 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:20,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-16 12:16:21,126 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1888465673, now seen corresponding path program 1 times [2022-11-16 12:16:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46564288] [2022-11-16 12:16:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:21,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586207437] [2022-11-16 12:16:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:21,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:21,221 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:21,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-16 12:16:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:23,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:16:23,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-16 12:16:23,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:23,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46564288] [2022-11-16 12:16:23,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:23,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586207437] [2022-11-16 12:16:23,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586207437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:23,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:23,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:16:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687907718] [2022-11-16 12:16:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:23,160 INFO L87 Difference]: Start difference. First operand 956 states and 1638 transitions. Second operand has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 12:16:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:23,828 INFO L93 Difference]: Finished difference Result 1733 states and 3003 transitions. [2022-11-16 12:16:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 342 [2022-11-16 12:16:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:23,834 INFO L225 Difference]: With dead ends: 1733 [2022-11-16 12:16:23,834 INFO L226 Difference]: Without dead ends: 963 [2022-11-16 12:16:23,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:23,838 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 5 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5311 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:23,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5311 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:16:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-16 12:16:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 936. [2022-11-16 12:16:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 646 states have (on average 1.1795665634674923) internal successors, (762), 658 states have internal predecessors, (762), 216 states have call successors, (216), 50 states have call predecessors, (216), 72 states have return successors, (585), 228 states have call predecessors, (585), 214 states have call successors, (585) [2022-11-16 12:16:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1563 transitions. [2022-11-16 12:16:23,937 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1563 transitions. Word has length 342 [2022-11-16 12:16:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:23,937 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1563 transitions. [2022-11-16 12:16:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 8 states have internal predecessors, (129), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-16 12:16:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1563 transitions. [2022-11-16 12:16:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-16 12:16:23,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:23,941 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:23,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:24,152 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1302620554, now seen corresponding path program 1 times [2022-11-16 12:16:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:24,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411798572] [2022-11-16 12:16:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:24,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:24,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:24,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836559647] [2022-11-16 12:16:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:24,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:24,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:24,250 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:24,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-16 12:16:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:26,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 3679 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-16 12:16:26,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:26,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:26,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:16:27,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:27,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:16:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:27,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:16:27,335 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17184 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_17184) |c_#memory_int|)) is different from true [2022-11-16 12:16:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 305 proven. 38 refuted. 3 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-16 12:16:27,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:28,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411798572] [2022-11-16 12:16:28,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:28,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836559647] [2022-11-16 12:16:28,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836559647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:28,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:28,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-16 12:16:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289097881] [2022-11-16 12:16:28,303 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:28,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:16:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:16:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=507, Unknown=11, NotChecked=46, Total=650 [2022-11-16 12:16:28,305 INFO L87 Difference]: Start difference. First operand 936 states and 1563 transitions. Second operand has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 20 states have internal predecessors, (151), 12 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (36), 9 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-16 12:16:31,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:16:34,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:16:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:38,312 INFO L93 Difference]: Finished difference Result 2013 states and 3447 transitions. [2022-11-16 12:16:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:16:38,313 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 20 states have internal predecessors, (151), 12 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (36), 9 states have call predecessors, (36), 12 states have call successors, (36) Word has length 327 [2022-11-16 12:16:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:38,321 INFO L225 Difference]: With dead ends: 2013 [2022-11-16 12:16:38,321 INFO L226 Difference]: Without dead ends: 1163 [2022-11-16 12:16:38,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 509 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=137, Invalid=838, Unknown=21, NotChecked=60, Total=1056 [2022-11-16 12:16:38,326 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 475 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 3975 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 4739 SdHoareTripleChecker+Invalid, 9392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 3975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4670 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:38,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 4739 Invalid, 9392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 3975 Invalid, 0 Unknown, 4670 Unchecked, 9.3s Time] [2022-11-16 12:16:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-16 12:16:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 951. [2022-11-16 12:16:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 660 states have (on average 1.1803030303030304) internal successors, (779), 671 states have internal predecessors, (779), 217 states have call successors, (217), 50 states have call predecessors, (217), 72 states have return successors, (585), 230 states have call predecessors, (585), 215 states have call successors, (585) [2022-11-16 12:16:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1581 transitions. [2022-11-16 12:16:38,467 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1581 transitions. Word has length 327 [2022-11-16 12:16:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:38,467 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1581 transitions. [2022-11-16 12:16:38,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 20 states have internal predecessors, (151), 12 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (36), 9 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-16 12:16:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1581 transitions. [2022-11-16 12:16:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-16 12:16:38,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:38,471 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:38,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:38,672 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2016940749, now seen corresponding path program 1 times [2022-11-16 12:16:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:38,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566052780] [2022-11-16 12:16:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:38,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933760701] [2022-11-16 12:16:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:38,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:38,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:38,765 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:38,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14db3202-b6bc-4054-a355-1be79956ba71/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-16 12:16:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 344 conjunts are in the unsatisfiable core [2022-11-16 12:16:41,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:41,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:16:41,360 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-16 12:16:41,403 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:16:41,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 12:16:42,488 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_17604 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_17604) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_17605 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_17605) |c_#memory_int|)) (exists ((v_ArrVal_17603 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_17603)))) is different from true [2022-11-16 12:16:42,705 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:16:42,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-16 12:16:42,713 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 [2022-11-16 12:16:42,720 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 [2022-11-16 12:16:42,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6