./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- 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-6b4ec56 [2022-11-20 12:46:56,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:46:56,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:46:56,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:46:56,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:46:56,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:46:56,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:46:56,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:46:56,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:46:56,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:46:56,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:46:56,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:46:56,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:46:56,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:46:56,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:46:56,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:46:56,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:46:56,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:46:56,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:46:56,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:46:56,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:46:56,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:46:56,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:46:56,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:46:56,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:46:56,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:46:56,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:46:56,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:46:56,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:46:56,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:46:56,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:46:56,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:46:56,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:46:56,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:46:56,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:46:56,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:46:56,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:46:56,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:46:56,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:46:56,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:46:56,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:46:56,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:46:56,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:46:56,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:46:56,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:46:56,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:46:56,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:46:56,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:46:56,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:46:56,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:46:56,564 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:46:56,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:46:56,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:46:56,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:46:56,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:46:56,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:46:56,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:46:56,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:46:56,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:46:56,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:46:56,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:46:56,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:46:56,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:46:56,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:46:56,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:46:56,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:46:56,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:46:56,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:46:56,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:46:56,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:46:56,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:46:56,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:46:56,572 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_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-11-20 12:46:56,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:46:57,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:46:57,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:46:57,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:46:57,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:46:57,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-20 12:47:00,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:47:01,588 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:47:01,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-20 12:47:01,653 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/data/58cd1853f/fdd4e0f275b445e0a9c685a0b256e700/FLAG23ed49128 [2022-11-20 12:47:01,677 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/data/58cd1853f/fdd4e0f275b445e0a9c685a0b256e700 [2022-11-20 12:47:01,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:47:01,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:47:01,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:01,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:47:01,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:47:01,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:01" (1/1) ... [2022-11-20 12:47:01,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d06af22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:01, skipping insertion in model container [2022-11-20 12:47:01,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:01" (1/1) ... [2022-11-20 12:47:01,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:47:01,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:47:02,124 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-20 12:47:02,134 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-20 12:47:03,313 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,314 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,315 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,317 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,318 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,337 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,338 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,341 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,342 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,345 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,346 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,348 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:03,348 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:47:04,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:47:04,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:47:04,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:47:04,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:47:04,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:47:04,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:47:04,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:47:04,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:47:04,094 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:47:04,451 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:47:04,514 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,545 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,639 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,641 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,641 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,642 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,642 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,643 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,644 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,645 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,646 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,646 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,647 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,647 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,651 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,652 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,652 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,653 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,658 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,659 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,670 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,671 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,672 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:04,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:47:04,748 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-20 12:47:04,749 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-20 12:47:04,805 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,805 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,806 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,807 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,808 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,817 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,818 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,820 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,820 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,822 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,823 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,824 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,824 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:47:04,874 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:47:04,875 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:47:04,877 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:47:04,878 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:47:04,879 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:47:04,880 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:47:04,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:47:04,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:47:04,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:47:04,944 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:47:04,982 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:04,993 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,066 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,068 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,068 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,069 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,069 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,072 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,072 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,073 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,073 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,074 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,075 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,076 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,077 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,079 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,079 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,101 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,102 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,102 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:05,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:05,435 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:47:05,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05 WrapperNode [2022-11-20 12:47:05,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:05,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:05,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:47:05,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:47:05,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,716 INFO L138 Inliner]: procedures = 697, calls = 1917, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1032 [2022-11-20 12:47:05,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:05,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:47:05,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:47:05,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:47:05,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:47:05,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:47:05,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:47:05,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:47:05,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (1/1) ... [2022-11-20 12:47:05,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:05,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:06,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:47:06,034 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-20 12:47:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-20 12:47:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-20 12:47:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-20 12:47:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:47:06,035 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 12:47:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 12:47:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 12:47:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 12:47:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 12:47:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 12:47:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-20 12:47:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-20 12:47:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:47:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:47:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:47:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:47:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:47:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:47:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-20 12:47:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-20 12:47:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:47:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:47:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:47:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-20 12:47:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-20 12:47:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 12:47:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 12:47:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:47:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:47:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:47:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:47:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:47:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:47:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 12:47:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 12:47:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 12:47:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-20 12:47:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-20 12:47:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 12:47:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 12:47:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:47:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:47:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:47:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:47:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 12:47:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 12:47:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-20 12:47:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-20 12:47:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:47:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:47:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:47:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-20 12:47:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-20 12:47:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 12:47:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 12:47:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:47:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:47:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:47:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:47:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 12:47:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:47:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-20 12:47:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:47:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:47:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:47:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-20 12:47:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-20 12:47:06,600 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:47:06,603 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:47:09,312 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:47:09,324 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:47:09,324 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:47:09,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:09 BoogieIcfgContainer [2022-11-20 12:47:09,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:47:09,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:47:09,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:47:09,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:47:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:47:01" (1/3) ... [2022-11-20 12:47:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc164f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:09, skipping insertion in model container [2022-11-20 12:47:09,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:05" (2/3) ... [2022-11-20 12:47:09,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc164f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:09, skipping insertion in model container [2022-11-20 12:47:09,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:09" (3/3) ... [2022-11-20 12:47:09,339 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-11-20 12:47:09,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:47:09,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:47:09,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:47:09,468 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;@8b6d04a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:47:09,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:47:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 440 states, 255 states have (on average 1.2549019607843137) internal successors, (320), 258 states have internal predecessors, (320), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-20 12:47:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:47:09,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:09,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:09,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1618864345, now seen corresponding path program 1 times [2022-11-20 12:47:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:09,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779737219] [2022-11-20 12:47:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:47:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:47:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:47:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:47:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:47:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:47:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:47:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:47:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:47:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 12:47:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:47:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:47:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:47:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:47:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-20 12:47:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:11,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779737219] [2022-11-20 12:47:11,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779737219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:11,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:11,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967801791] [2022-11-20 12:47:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:47:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:11,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:47:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:47:11,189 INFO L87 Difference]: Start difference. First operand has 440 states, 255 states have (on average 1.2549019607843137) internal successors, (320), 258 states have internal predecessors, (320), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:47:13,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:14,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:16,659 INFO L93 Difference]: Finished difference Result 1047 states and 1782 transitions. [2022-11-20 12:47:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:47:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-11-20 12:47:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:16,702 INFO L225 Difference]: With dead ends: 1047 [2022-11-20 12:47:16,707 INFO L226 Difference]: Without dead ends: 613 [2022-11-20 12:47:16,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:47:16,738 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 326 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:16,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1040 Invalid, 1162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [496 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 12:47:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-20 12:47:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 433. [2022-11-20 12:47:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 249 states have (on average 1.2289156626506024) internal successors, (306), 252 states have internal predecessors, (306), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-20 12:47:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 616 transitions. [2022-11-20 12:47:16,897 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 616 transitions. Word has length 133 [2022-11-20 12:47:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:16,898 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 616 transitions. [2022-11-20 12:47:16,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:47:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 616 transitions. [2022-11-20 12:47:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:47:16,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:16,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:16,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:47:16,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 348864297, now seen corresponding path program 1 times [2022-11-20 12:47:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212895878] [2022-11-20 12:47:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:47:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:47:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:47:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:47:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:47:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:47:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:47:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:47:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:47:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 12:47:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:47:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:47:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:47:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:47:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-20 12:47:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:17,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212895878] [2022-11-20 12:47:17,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212895878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:17,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229318592] [2022-11-20 12:47:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:17,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:17,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:17,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:47:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:18,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:47:18,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-20 12:47:19,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:19,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229318592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:19,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:19,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-20 12:47:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869544348] [2022-11-20 12:47:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:19,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:19,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:19,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:19,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:47:19,056 INFO L87 Difference]: Start difference. First operand 433 states and 616 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 12:47:21,362 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 [] [2022-11-20 12:47:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:21,721 INFO L93 Difference]: Finished difference Result 832 states and 1201 transitions. [2022-11-20 12:47:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:47:21,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2022-11-20 12:47:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:21,729 INFO L225 Difference]: With dead ends: 832 [2022-11-20 12:47:21,729 INFO L226 Difference]: Without dead ends: 435 [2022-11-20 12:47:21,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:47:21,735 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 631 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:21,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 2141 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:47:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-20 12:47:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2022-11-20 12:47:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 250 states have (on average 1.228) internal successors, (307), 254 states have internal predecessors, (307), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2022-11-20 12:47:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 630 transitions. [2022-11-20 12:47:21,796 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 630 transitions. Word has length 133 [2022-11-20 12:47:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:21,797 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 630 transitions. [2022-11-20 12:47:21,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 12:47:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 630 transitions. [2022-11-20 12:47:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 12:47:21,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:21,801 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2022-11-20 12:47:21,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:22,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:22,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1757484055, now seen corresponding path program 1 times [2022-11-20 12:47:22,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:22,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33263494] [2022-11-20 12:47:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:22,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:47:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:47:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 12:47:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:47:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 12:47:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:47:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:47:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:47:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:47:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:47:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 12:47:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:47:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:47:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:47:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:47:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-20 12:47:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 12:47:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:23,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33263494] [2022-11-20 12:47:23,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33263494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:23,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506497879] [2022-11-20 12:47:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:23,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:23,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:47:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:24,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:24,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-20 12:47:24,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:24,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506497879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:24,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:24,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-20 12:47:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039862106] [2022-11-20 12:47:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:24,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:47:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:47:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:47:24,383 INFO L87 Difference]: Start difference. First operand 435 states and 630 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:47:26,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:28,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:30,354 INFO L93 Difference]: Finished difference Result 855 states and 1272 transitions. [2022-11-20 12:47:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:47:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-11-20 12:47:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:30,366 INFO L225 Difference]: With dead ends: 855 [2022-11-20 12:47:30,366 INFO L226 Difference]: Without dead ends: 456 [2022-11-20 12:47:30,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:47:30,374 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 689 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:30,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 3083 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 12:47:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-20 12:47:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 454. [2022-11-20 12:47:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 266 states have (on average 1.236842105263158) internal successors, (329), 270 states have internal predecessors, (329), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-20 12:47:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 673 transitions. [2022-11-20 12:47:30,434 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 673 transitions. Word has length 141 [2022-11-20 12:47:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:30,437 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 673 transitions. [2022-11-20 12:47:30,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:47:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 673 transitions. [2022-11-20 12:47:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 12:47:30,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:30,443 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:30,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1778270991, now seen corresponding path program 1 times [2022-11-20 12:47:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:30,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765575284] [2022-11-20 12:47:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:30,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:30,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577788898] [2022-11-20 12:47:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:30,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:30,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:30,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:30,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:47:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:31,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-20 12:47:31,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:31,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:31,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765575284] [2022-11-20 12:47:31,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:31,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577788898] [2022-11-20 12:47:31,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577788898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:31,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:31,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:47:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290573202] [2022-11-20 12:47:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:31,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:47:31,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:47:31,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:47:31,827 INFO L87 Difference]: Start difference. First operand 454 states and 673 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 12:47:33,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:34,914 INFO L93 Difference]: Finished difference Result 880 states and 1345 transitions. [2022-11-20 12:47:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:47:34,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2022-11-20 12:47:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:34,920 INFO L225 Difference]: With dead ends: 880 [2022-11-20 12:47:34,920 INFO L226 Difference]: Without dead ends: 462 [2022-11-20 12:47:34,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:47:34,925 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 655 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:34,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2633 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:47:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-20 12:47:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 454. [2022-11-20 12:47:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 266 states have (on average 1.236842105263158) internal successors, (329), 270 states have internal predecessors, (329), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-20 12:47:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 673 transitions. [2022-11-20 12:47:34,980 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 673 transitions. Word has length 156 [2022-11-20 12:47:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:34,984 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 673 transitions. [2022-11-20 12:47:34,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-20 12:47:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 673 transitions. [2022-11-20 12:47:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 12:47:34,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:34,988 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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] [2022-11-20 12:47:35,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:35,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 723207826, now seen corresponding path program 1 times [2022-11-20 12:47:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141250626] [2022-11-20 12:47:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:35,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:35,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058954353] [2022-11-20 12:47:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:35,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:47:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:36,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:47:36,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 12:47:36,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:36,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:36,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141250626] [2022-11-20 12:47:36,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:36,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058954353] [2022-11-20 12:47:36,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058954353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:36,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:36,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:47:36,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502339527] [2022-11-20 12:47:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:36,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:47:36,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:36,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:47:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:47:36,412 INFO L87 Difference]: Start difference. First operand 454 states and 673 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-20 12:47:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:41,044 INFO L93 Difference]: Finished difference Result 890 states and 1349 transitions. [2022-11-20 12:47:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:47:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2022-11-20 12:47:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:41,051 INFO L225 Difference]: With dead ends: 890 [2022-11-20 12:47:41,051 INFO L226 Difference]: Without dead ends: 472 [2022-11-20 12:47:41,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:47:41,055 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 720 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:41,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 3540 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-20 12:47:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-11-20 12:47:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2022-11-20 12:47:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 266 states have (on average 1.236842105263158) internal successors, (329), 270 states have internal predecessors, (329), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-20 12:47:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 673 transitions. [2022-11-20 12:47:41,098 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 673 transitions. Word has length 172 [2022-11-20 12:47:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:41,099 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 673 transitions. [2022-11-20 12:47:41,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-20 12:47:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 673 transitions. [2022-11-20 12:47:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 12:47:41,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:41,103 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:41,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 12:47:41,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:41,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -662536810, now seen corresponding path program 2 times [2022-11-20 12:47:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:41,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351687188] [2022-11-20 12:47:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:41,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73059265] [2022-11-20 12:47:41,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:41,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:41,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:47:42,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:47:42,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:42,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2841 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:42,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 12:47:42,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:42,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:42,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351687188] [2022-11-20 12:47:42,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:42,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73059265] [2022-11-20 12:47:42,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73059265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:42,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:47:42,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141382347] [2022-11-20 12:47:42,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:47:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:47:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:47:42,685 INFO L87 Difference]: Start difference. First operand 454 states and 673 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:47:44,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:45,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:46,535 INFO L93 Difference]: Finished difference Result 842 states and 1269 transitions. [2022-11-20 12:47:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:47:46,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 187 [2022-11-20 12:47:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:46,542 INFO L225 Difference]: With dead ends: 842 [2022-11-20 12:47:46,542 INFO L226 Difference]: Without dead ends: 456 [2022-11-20 12:47:46,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:47:46,554 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 643 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:46,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2665 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 12:47:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-20 12:47:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-11-20 12:47:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 267 states have (on average 1.2359550561797752) internal successors, (330), 272 states have internal predecessors, (330), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-11-20 12:47:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 685 transitions. [2022-11-20 12:47:46,596 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 685 transitions. Word has length 187 [2022-11-20 12:47:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:46,598 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 685 transitions. [2022-11-20 12:47:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:47:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 685 transitions. [2022-11-20 12:47:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 12:47:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:46,604 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:46,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:46,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash 324653212, now seen corresponding path program 1 times [2022-11-20 12:47:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:46,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357968994] [2022-11-20 12:47:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:47,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:47,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566475580] [2022-11-20 12:47:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:47,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:47,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:47,023 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:47,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:47:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:48,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:47:48,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-20 12:47:48,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:48,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:48,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357968994] [2022-11-20 12:47:48,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:48,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566475580] [2022-11-20 12:47:48,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566475580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:48,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:48,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:47:48,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201250602] [2022-11-20 12:47:48,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:47:48,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:48,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:47:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:47:48,198 INFO L87 Difference]: Start difference. First operand 456 states and 685 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-20 12:47:51,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:47:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:52,400 INFO L93 Difference]: Finished difference Result 847 states and 1294 transitions. [2022-11-20 12:47:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:47:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 210 [2022-11-20 12:47:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:52,405 INFO L225 Difference]: With dead ends: 847 [2022-11-20 12:47:52,405 INFO L226 Difference]: Without dead ends: 459 [2022-11-20 12:47:52,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:47:52,409 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 667 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:52,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 3146 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 12:47:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-20 12:47:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2022-11-20 12:47:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 273 states have internal predecessors, (331), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-11-20 12:47:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 686 transitions. [2022-11-20 12:47:52,441 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 686 transitions. Word has length 210 [2022-11-20 12:47:52,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:52,442 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 686 transitions. [2022-11-20 12:47:52,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-20 12:47:52,442 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 686 transitions. [2022-11-20 12:47:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-20 12:47:52,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:52,445 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:52,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:52,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash 836482535, now seen corresponding path program 1 times [2022-11-20 12:47:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:52,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472571597] [2022-11-20 12:47:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:52,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:52,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906221716] [2022-11-20 12:47:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:47:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 12:47:53,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 12:47:54,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:54,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472571597] [2022-11-20 12:47:54,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:54,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906221716] [2022-11-20 12:47:54,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906221716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:54,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:47:54,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-20 12:47:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090467163] [2022-11-20 12:47:54,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:47:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:47:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:47:54,357 INFO L87 Difference]: Start difference. First operand 457 states and 686 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-11-20 12:47:56,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:01,086 INFO L93 Difference]: Finished difference Result 865 states and 1328 transitions. [2022-11-20 12:48:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:48:01,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) Word has length 211 [2022-11-20 12:48:01,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:01,093 INFO L225 Difference]: With dead ends: 865 [2022-11-20 12:48:01,093 INFO L226 Difference]: Without dead ends: 476 [2022-11-20 12:48:01,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 409 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:48:01,098 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1029 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:01,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 4588 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 12:48:01,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-20 12:48:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 470. [2022-11-20 12:48:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 280 states have (on average 1.2428571428571429) internal successors, (348), 284 states have internal predecessors, (348), 159 states have call successors, (159), 27 states have call predecessors, (159), 29 states have return successors, (198), 159 states have call predecessors, (198), 157 states have call successors, (198) [2022-11-20 12:48:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 705 transitions. [2022-11-20 12:48:01,134 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 705 transitions. Word has length 211 [2022-11-20 12:48:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:01,135 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 705 transitions. [2022-11-20 12:48:01,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-11-20 12:48:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 705 transitions. [2022-11-20 12:48:01,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-20 12:48:01,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:01,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:01,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:01,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:01,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash -922986487, now seen corresponding path program 2 times [2022-11-20 12:48:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:01,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592242428] [2022-11-20 12:48:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:01,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:01,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:48:01,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571788753] [2022-11-20 12:48:01,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:48:01,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:01,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:01,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:48:02,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:48:02,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:02,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:48:02,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-20 12:48:02,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:02,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592242428] [2022-11-20 12:48:02,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:48:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571788753] [2022-11-20 12:48:02,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571788753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:02,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:02,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:48:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878809247] [2022-11-20 12:48:02,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:48:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:48:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:48:02,790 INFO L87 Difference]: Start difference. First operand 470 states and 705 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:48:04,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:48:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:06,420 INFO L93 Difference]: Finished difference Result 878 states and 1329 transitions. [2022-11-20 12:48:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:48:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 241 [2022-11-20 12:48:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:06,426 INFO L225 Difference]: With dead ends: 878 [2022-11-20 12:48:06,426 INFO L226 Difference]: Without dead ends: 482 [2022-11-20 12:48:06,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:48:06,430 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 64 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:06,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3888 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:48:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-20 12:48:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-11-20 12:48:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 286 states have (on average 1.2412587412587412) internal successors, (355), 290 states have internal predecessors, (355), 164 states have call successors, (164), 28 states have call predecessors, (164), 30 states have return successors, (203), 164 states have call predecessors, (203), 162 states have call successors, (203) [2022-11-20 12:48:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 722 transitions. [2022-11-20 12:48:06,466 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 722 transitions. Word has length 241 [2022-11-20 12:48:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:06,467 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 722 transitions. [2022-11-20 12:48:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-20 12:48:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 722 transitions. [2022-11-20 12:48:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-20 12:48:06,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:06,472 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:06,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:06,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:06,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1950759975, now seen corresponding path program 3 times [2022-11-20 12:48:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:06,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863812928] [2022-11-20 12:48:06,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:06,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:48:06,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908951639] [2022-11-20 12:48:06,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:48:06,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:06,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:06,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:06,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:48:08,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:48:08,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:08,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-20 12:48:08,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:08,859 INFO L321 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-11-20 12:48:08,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59 [2022-11-20 12:49:58,751 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 398 DAG size of output: 139 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 12:49:58,753 INFO L321 Elim1Store]: treesize reduction 1221, result has 21.5 percent of original size [2022-11-20 12:49:58,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 81 case distinctions, treesize of input 410 treesize of output 655 [2022-11-20 12:50:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-20 12:50:00,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:06,563 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 128 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:50:17,140 WARN L233 SmtUtils]: Spent 10.47s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 12:50:21,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:21,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863812928] [2022-11-20 12:50:21,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:21,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908951639] [2022-11-20 12:50:21,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908951639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:50:21,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:50:21,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-20 12:50:21,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648731539] [2022-11-20 12:50:21,601 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:21,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:50:21,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:21,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:50:21,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=784, Unknown=3, NotChecked=0, Total=870 [2022-11-20 12:50:21,604 INFO L87 Difference]: Start difference. First operand 482 states and 722 transitions. Second operand has 26 states, 22 states have (on average 4.454545454545454) internal successors, (98), 19 states have internal predecessors, (98), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-20 12:50:48,636 WARN L233 SmtUtils]: Spent 20.70s on a formula simplification. DAG size of input: 86 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:50,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:52,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 12:50:54,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 12:50:55,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:50:57,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-20 12:50:58,992 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 [] [2022-11-20 12:51:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:07,597 INFO L93 Difference]: Finished difference Result 608 states and 950 transitions. [2022-11-20 12:51:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:51:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.454545454545454) internal successors, (98), 19 states have internal predecessors, (98), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) Word has length 256 [2022-11-20 12:51:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:07,605 INFO L225 Difference]: With dead ends: 608 [2022-11-20 12:51:07,605 INFO L226 Difference]: Without dead ends: 606 [2022-11-20 12:51:07,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=140, Invalid=1416, Unknown=4, NotChecked=0, Total=1560 [2022-11-20 12:51:07,608 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 187 mSDsluCounter, 5570 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 193 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 6350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 2293 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:07,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 6095 Invalid, 6350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [193 Valid, 3862 Invalid, 2 Unknown, 2293 Unchecked, 15.8s Time] [2022-11-20 12:51:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-20 12:51:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 508. [2022-11-20 12:51:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 307 states have internal predecessors, (373), 170 states have call successors, (170), 30 states have call predecessors, (170), 34 states have return successors, (232), 171 states have call predecessors, (232), 168 states have call successors, (232) [2022-11-20 12:51:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 775 transitions. [2022-11-20 12:51:07,661 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 775 transitions. Word has length 256 [2022-11-20 12:51:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:07,662 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 775 transitions. [2022-11-20 12:51:07,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.454545454545454) internal successors, (98), 19 states have internal predecessors, (98), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-11-20 12:51:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 775 transitions. [2022-11-20 12:51:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-20 12:51:07,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:07,668 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:07,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:51:07,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1557732965, now seen corresponding path program 1 times [2022-11-20 12:51:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:07,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883064008] [2022-11-20 12:51:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:08,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2895152] [2022-11-20 12:51:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:08,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:08,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:08,026 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:08,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:51:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 3381 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:51:09,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-20 12:51:09,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:09,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:09,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883064008] [2022-11-20 12:51:09,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:09,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2895152] [2022-11-20 12:51:09,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2895152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:09,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:09,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:51:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502313865] [2022-11-20 12:51:09,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:09,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:51:09,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:51:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:51:09,224 INFO L87 Difference]: Start difference. First operand 508 states and 775 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-20 12:51:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:09,348 INFO L93 Difference]: Finished difference Result 985 states and 1593 transitions. [2022-11-20 12:51:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:51:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 256 [2022-11-20 12:51:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:09,354 INFO L225 Difference]: With dead ends: 985 [2022-11-20 12:51:09,354 INFO L226 Difference]: Without dead ends: 513 [2022-11-20 12:51:09,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:51:09,359 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 7 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1840 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 [2022-11-20 12:51:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1840 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:51:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-20 12:51:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 510. [2022-11-20 12:51:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 304 states have (on average 1.2335526315789473) internal successors, (375), 309 states have internal predecessors, (375), 170 states have call successors, (170), 30 states have call predecessors, (170), 34 states have return successors, (232), 171 states have call predecessors, (232), 168 states have call successors, (232) [2022-11-20 12:51:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 777 transitions. [2022-11-20 12:51:09,408 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 777 transitions. Word has length 256 [2022-11-20 12:51:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:09,409 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 777 transitions. [2022-11-20 12:51:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-20 12:51:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 777 transitions. [2022-11-20 12:51:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 12:51:09,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:09,415 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:09,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:09,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:09,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1268094074, now seen corresponding path program 1 times [2022-11-20 12:51:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:09,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548658000] [2022-11-20 12:51:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:09,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:09,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87197087] [2022-11-20 12:51:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:09,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:09,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:09,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:09,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:51:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:11,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 3531 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:51:11,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-11-20 12:51:11,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:11,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548658000] [2022-11-20 12:51:11,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87197087] [2022-11-20 12:51:11,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87197087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:11,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:11,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:51:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425445666] [2022-11-20 12:51:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:11,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:51:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:51:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:11,150 INFO L87 Difference]: Start difference. First operand 510 states and 777 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:51:14,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:14,856 INFO L93 Difference]: Finished difference Result 1038 states and 1659 transitions. [2022-11-20 12:51:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:51:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 277 [2022-11-20 12:51:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:14,862 INFO L225 Difference]: With dead ends: 1038 [2022-11-20 12:51:14,862 INFO L226 Difference]: Without dead ends: 564 [2022-11-20 12:51:14,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:51:14,868 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 23 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:14,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2895 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 12:51:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-20 12:51:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 522. [2022-11-20 12:51:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 316 states have (on average 1.2341772151898733) internal successors, (390), 321 states have internal predecessors, (390), 170 states have call successors, (170), 30 states have call predecessors, (170), 34 states have return successors, (232), 171 states have call predecessors, (232), 168 states have call successors, (232) [2022-11-20 12:51:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 792 transitions. [2022-11-20 12:51:14,992 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 792 transitions. Word has length 277 [2022-11-20 12:51:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:14,993 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 792 transitions. [2022-11-20 12:51:14,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:51:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 792 transitions. [2022-11-20 12:51:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 12:51:14,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:14,999 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:15,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:51:15,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -686642758, now seen corresponding path program 1 times [2022-11-20 12:51:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656038161] [2022-11-20 12:51:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:15,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:15,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395986722] [2022-11-20 12:51:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:15,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:15,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:51:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:16,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:51:16,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:51:16,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656038161] [2022-11-20 12:51:16,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:16,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395986722] [2022-11-20 12:51:16,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395986722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:16,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:16,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:51:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11906344] [2022-11-20 12:51:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:51:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:51:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:51:16,701 INFO L87 Difference]: Start difference. First operand 522 states and 792 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:51:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:16,782 INFO L93 Difference]: Finished difference Result 1020 states and 1596 transitions. [2022-11-20 12:51:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:51:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 277 [2022-11-20 12:51:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:16,788 INFO L225 Difference]: With dead ends: 1020 [2022-11-20 12:51:16,788 INFO L226 Difference]: Without dead ends: 534 [2022-11-20 12:51:16,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:51:16,793 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 3 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1834 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 [2022-11-20 12:51:16,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1834 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:51:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-20 12:51:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 528. [2022-11-20 12:51:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 322 states have (on average 1.2298136645962734) internal successors, (396), 327 states have internal predecessors, (396), 170 states have call successors, (170), 30 states have call predecessors, (170), 34 states have return successors, (232), 171 states have call predecessors, (232), 168 states have call successors, (232) [2022-11-20 12:51:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 798 transitions. [2022-11-20 12:51:16,842 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 798 transitions. Word has length 277 [2022-11-20 12:51:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:16,843 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 798 transitions. [2022-11-20 12:51:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 12:51:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 798 transitions. [2022-11-20 12:51:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-20 12:51:16,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:16,846 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:16,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:17,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:51:17,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1201738604, now seen corresponding path program 1 times [2022-11-20 12:51:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295561117] [2022-11-20 12:51:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:17,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:17,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841099203] [2022-11-20 12:51:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:17,189 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:17,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:51:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:18,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 3374 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:51:18,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-20 12:51:18,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:18,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295561117] [2022-11-20 12:51:18,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841099203] [2022-11-20 12:51:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841099203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:18,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:18,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:51:18,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126315778] [2022-11-20 12:51:18,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:18,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:51:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:51:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:51:18,661 INFO L87 Difference]: Start difference. First operand 528 states and 798 transitions. Second operand has 10 states, 9 states have (on average 12.88888888888889) internal successors, (116), 10 states have internal predecessors, (116), 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) [2022-11-20 12:51:20,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:22,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:24,604 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 [] [2022-11-20 12:51:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:26,432 INFO L93 Difference]: Finished difference Result 990 states and 1517 transitions. [2022-11-20 12:51:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:51:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.88888888888889) internal successors, (116), 10 states have internal predecessors, (116), 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 262 [2022-11-20 12:51:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:26,439 INFO L225 Difference]: With dead ends: 990 [2022-11-20 12:51:26,439 INFO L226 Difference]: Without dead ends: 530 [2022-11-20 12:51:26,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:51:26,443 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 732 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 4022 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:26,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 4022 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 866 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 12:51:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-20 12:51:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 506. [2022-11-20 12:51:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 302 states have (on average 1.2251655629139073) internal successors, (370), 307 states have internal predecessors, (370), 169 states have call successors, (169), 30 states have call predecessors, (169), 33 states have return successors, (218), 169 states have call predecessors, (218), 167 states have call successors, (218) [2022-11-20 12:51:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 757 transitions. [2022-11-20 12:51:26,493 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 757 transitions. Word has length 262 [2022-11-20 12:51:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:26,494 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 757 transitions. [2022-11-20 12:51:26,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.88888888888889) internal successors, (116), 10 states have internal predecessors, (116), 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) [2022-11-20 12:51:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 757 transitions. [2022-11-20 12:51:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 12:51:26,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:26,497 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:26,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:26,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:26,722 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:26,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash -313258246, now seen corresponding path program 1 times [2022-11-20 12:51:26,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:26,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89280911] [2022-11-20 12:51:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:26,849 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:26,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899888732] [2022-11-20 12:51:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:26,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:26,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:26,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:51:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:28,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:51:28,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-20 12:51:28,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89280911] [2022-11-20 12:51:28,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:28,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899888732] [2022-11-20 12:51:28,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899888732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:28,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:28,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:51:28,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170364734] [2022-11-20 12:51:28,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:28,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:51:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:28,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:51:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:28,362 INFO L87 Difference]: Start difference. First operand 506 states and 757 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:51:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:28,981 INFO L93 Difference]: Finished difference Result 968 states and 1462 transitions. [2022-11-20 12:51:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:51:28,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 277 [2022-11-20 12:51:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:28,988 INFO L225 Difference]: With dead ends: 968 [2022-11-20 12:51:28,988 INFO L226 Difference]: Without dead ends: 533 [2022-11-20 12:51:28,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:51:28,993 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 34 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:28,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3115 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:51:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-20 12:51:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 512. [2022-11-20 12:51:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 305 states have (on average 1.222950819672131) internal successors, (373), 310 states have internal predecessors, (373), 172 states have call successors, (172), 30 states have call predecessors, (172), 33 states have return successors, (221), 172 states have call predecessors, (221), 170 states have call successors, (221) [2022-11-20 12:51:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 766 transitions. [2022-11-20 12:51:29,042 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 766 transitions. Word has length 277 [2022-11-20 12:51:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:29,043 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 766 transitions. [2022-11-20 12:51:29,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 12:51:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 766 transitions. [2022-11-20 12:51:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-20 12:51:29,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:29,047 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:29,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 12:51:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:29,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1708291263, now seen corresponding path program 1 times [2022-11-20 12:51:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:29,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47229955] [2022-11-20 12:51:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:29,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:29,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363616418] [2022-11-20 12:51:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:29,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:29,390 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:29,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:51:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:30,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 3530 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 12:51:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 201 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-11-20 12:51:31,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:51:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 70 proven. 13 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-20 12:51:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47229955] [2022-11-20 12:51:32,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:32,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363616418] [2022-11-20 12:51:32,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363616418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:51:32,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:51:32,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-20 12:51:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707880] [2022-11-20 12:51:32,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:51:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:51:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:51:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:51:32,197 INFO L87 Difference]: Start difference. First operand 512 states and 766 transitions. Second operand has 22 states, 18 states have (on average 6.888888888888889) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-20 12:51:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:33,551 INFO L93 Difference]: Finished difference Result 949 states and 1467 transitions. [2022-11-20 12:51:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:51:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 6.888888888888889) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) Word has length 295 [2022-11-20 12:51:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:33,560 INFO L225 Difference]: With dead ends: 949 [2022-11-20 12:51:33,560 INFO L226 Difference]: Without dead ends: 525 [2022-11-20 12:51:33,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 564 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:51:33,565 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 20 mSDsluCounter, 10583 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11187 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:33,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11187 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:51:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-20 12:51:33,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 519. [2022-11-20 12:51:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 311 states have (on average 1.2218649517684887) internal successors, (380), 317 states have internal predecessors, (380), 172 states have call successors, (172), 30 states have call predecessors, (172), 34 states have return successors, (239), 172 states have call predecessors, (239), 170 states have call successors, (239) [2022-11-20 12:51:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 791 transitions. [2022-11-20 12:51:33,614 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 791 transitions. Word has length 295 [2022-11-20 12:51:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:33,615 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 791 transitions. [2022-11-20 12:51:33,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 6.888888888888889) internal successors, (124), 15 states have internal predecessors, (124), 6 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-11-20 12:51:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 791 transitions. [2022-11-20 12:51:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-20 12:51:33,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:33,665 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:33,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:51:33,865 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash -903260580, now seen corresponding path program 2 times [2022-11-20 12:51:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:33,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969064156] [2022-11-20 12:51:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:33,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:33,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643624138] [2022-11-20 12:51:33,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:51:33,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:33,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:34,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:51:35,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:51:35,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:51:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 3526 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:51:35,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-20 12:51:35,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969064156] [2022-11-20 12:51:35,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643624138] [2022-11-20 12:51:35,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643624138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:51:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632917180] [2022-11-20 12:51:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:51:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:51:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:51:35,503 INFO L87 Difference]: Start difference. First operand 519 states and 791 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-20 12:51:37,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:40,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:51:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:41,504 INFO L93 Difference]: Finished difference Result 1009 states and 1556 transitions. [2022-11-20 12:51:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:51:41,505 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 289 [2022-11-20 12:51:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:41,511 INFO L225 Difference]: With dead ends: 1009 [2022-11-20 12:51:41,511 INFO L226 Difference]: Without dead ends: 561 [2022-11-20 12:51:41,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:51:41,516 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 42 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:41,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4405 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 12:51:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-20 12:51:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 538. [2022-11-20 12:51:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 324 states have (on average 1.2222222222222223) internal successors, (396), 330 states have internal predecessors, (396), 177 states have call successors, (177), 30 states have call predecessors, (177), 35 states have return successors, (249), 178 states have call predecessors, (249), 175 states have call successors, (249) [2022-11-20 12:51:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 822 transitions. [2022-11-20 12:51:41,571 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 822 transitions. Word has length 289 [2022-11-20 12:51:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:41,571 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 822 transitions. [2022-11-20 12:51:41,572 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-20 12:51:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 822 transitions. [2022-11-20 12:51:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-20 12:51:41,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:41,575 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:41,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:41,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:51:41,790 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1749527208, now seen corresponding path program 1 times [2022-11-20 12:51:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740714880] [2022-11-20 12:51:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:41,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664286975] [2022-11-20 12:51:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:41,941 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:41,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:51:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:43,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 3520 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:51:43,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-20 12:51:43,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740714880] [2022-11-20 12:51:43,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:43,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664286975] [2022-11-20 12:51:43,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664286975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:43,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:43,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:51:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649927578] [2022-11-20 12:51:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:43,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:51:43,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:51:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:51:43,445 INFO L87 Difference]: Start difference. First operand 538 states and 822 transitions. Second operand has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 12:51:45,507 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 [] [2022-11-20 12:51:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:45,793 INFO L93 Difference]: Finished difference Result 980 states and 1509 transitions. [2022-11-20 12:51:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:51:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 289 [2022-11-20 12:51:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:45,798 INFO L225 Difference]: With dead ends: 980 [2022-11-20 12:51:45,799 INFO L226 Difference]: Without dead ends: 516 [2022-11-20 12:51:45,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:45,803 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:45,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2230 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 12:51:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-20 12:51:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-11-20 12:51:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 310 states have (on average 1.2161290322580645) internal successors, (377), 317 states have internal predecessors, (377), 169 states have call successors, (169), 30 states have call predecessors, (169), 35 states have return successors, (238), 169 states have call predecessors, (238), 167 states have call successors, (238) [2022-11-20 12:51:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 784 transitions. [2022-11-20 12:51:45,853 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 784 transitions. Word has length 289 [2022-11-20 12:51:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:45,854 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 784 transitions. [2022-11-20 12:51:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 30.25) internal successors, (121), 5 states have internal predecessors, (121), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-20 12:51:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 784 transitions. [2022-11-20 12:51:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 12:51:45,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:45,858 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:45,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 12:51:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:51:46,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1932939798, now seen corresponding path program 1 times [2022-11-20 12:51:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:46,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593025018] [2022-11-20 12:51:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:46,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:46,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187729408] [2022-11-20 12:51:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:46,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:46,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:46,196 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:51:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3561 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 12:51:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-20 12:51:47,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:47,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593025018] [2022-11-20 12:51:47,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:47,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187729408] [2022-11-20 12:51:47,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187729408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:47,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:47,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:51:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547074783] [2022-11-20 12:51:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:47,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:51:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:51:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:51:47,841 INFO L87 Difference]: Start difference. First operand 516 states and 784 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 9 states have internal predecessors, (129), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:51:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:48,192 INFO L93 Difference]: Finished difference Result 1010 states and 1570 transitions. [2022-11-20 12:51:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:51:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 9 states have internal predecessors, (129), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) Word has length 300 [2022-11-20 12:51:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:48,198 INFO L225 Difference]: With dead ends: 1010 [2022-11-20 12:51:48,199 INFO L226 Difference]: Without dead ends: 530 [2022-11-20 12:51:48,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:51:48,204 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 6282 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6917 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:48,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6917 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:51:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-20 12:51:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 520. [2022-11-20 12:51:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 314 states have (on average 1.213375796178344) internal successors, (381), 319 states have internal predecessors, (381), 169 states have call successors, (169), 30 states have call predecessors, (169), 35 states have return successors, (238), 171 states have call predecessors, (238), 167 states have call successors, (238) [2022-11-20 12:51:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 788 transitions. [2022-11-20 12:51:48,252 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 788 transitions. Word has length 300 [2022-11-20 12:51:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:48,253 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 788 transitions. [2022-11-20 12:51:48,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 9 states have internal predecessors, (129), 2 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-20 12:51:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 788 transitions. [2022-11-20 12:51:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 12:51:48,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:48,256 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:48,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:48,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:48,473 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:48,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 319420262, now seen corresponding path program 1 times [2022-11-20 12:51:48,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:48,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224656245] [2022-11-20 12:51:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:48,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:48,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580195638] [2022-11-20 12:51:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:48,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:48,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:48,589 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:48,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:51:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:50,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:51:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-20 12:51:50,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:50,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:50,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224656245] [2022-11-20 12:51:50,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:50,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580195638] [2022-11-20 12:51:50,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580195638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:50,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:50,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:51:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329428917] [2022-11-20 12:51:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:51:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:51:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:51:50,084 INFO L87 Difference]: Start difference. First operand 520 states and 788 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:50,149 INFO L93 Difference]: Finished difference Result 1006 states and 1562 transitions. [2022-11-20 12:51:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:51:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 300 [2022-11-20 12:51:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:50,154 INFO L225 Difference]: With dead ends: 1006 [2022-11-20 12:51:50,154 INFO L226 Difference]: Without dead ends: 522 [2022-11-20 12:51:50,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:51:50,158 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 3 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1828 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 [2022-11-20 12:51:50,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1828 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:51:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-20 12:51:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2022-11-20 12:51:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 314 states have (on average 1.2070063694267517) internal successors, (379), 319 states have internal predecessors, (379), 169 states have call successors, (169), 30 states have call predecessors, (169), 35 states have return successors, (238), 171 states have call predecessors, (238), 167 states have call successors, (238) [2022-11-20 12:51:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 786 transitions. [2022-11-20 12:51:50,208 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 786 transitions. Word has length 300 [2022-11-20 12:51:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:50,209 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 786 transitions. [2022-11-20 12:51:50,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 786 transitions. [2022-11-20 12:51:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 12:51:50,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:50,213 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:50,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:50,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:50,429 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2016657083, now seen corresponding path program 1 times [2022-11-20 12:51:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:50,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348761847] [2022-11-20 12:51:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:50,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:50,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952156235] [2022-11-20 12:51:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:50,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:50,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:50,554 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:50,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:51:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:51:52,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3557 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:51:52,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 12:51:52,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:52,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348761847] [2022-11-20 12:51:52,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:52,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952156235] [2022-11-20 12:51:52,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952156235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:52,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:52,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:51:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322817622] [2022-11-20 12:51:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:52,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:51:52,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:51:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:51:52,161 INFO L87 Difference]: Start difference. First operand 520 states and 786 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:51:52,265 INFO L93 Difference]: Finished difference Result 1024 states and 1604 transitions. [2022-11-20 12:51:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:51:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2022-11-20 12:51:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:51:52,272 INFO L225 Difference]: With dead ends: 1024 [2022-11-20 12:51:52,272 INFO L226 Difference]: Without dead ends: 540 [2022-11-20 12:51:52,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:51:52,277 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 9 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:51:52,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2501 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:51:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-20 12:51:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 528. [2022-11-20 12:51:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 322 states have (on average 1.2018633540372672) internal successors, (387), 327 states have internal predecessors, (387), 169 states have call successors, (169), 30 states have call predecessors, (169), 35 states have return successors, (238), 171 states have call predecessors, (238), 167 states have call successors, (238) [2022-11-20 12:51:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 794 transitions. [2022-11-20 12:51:52,328 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 794 transitions. Word has length 294 [2022-11-20 12:51:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:51:52,329 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 794 transitions. [2022-11-20 12:51:52,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:51:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 794 transitions. [2022-11-20 12:51:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-11-20 12:51:52,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:51:52,333 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:52,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:52,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:52,551 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:51:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1510523424, now seen corresponding path program 2 times [2022-11-20 12:51:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:52,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258191051] [2022-11-20 12:51:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:52,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:52,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:52,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343728467] [2022-11-20 12:51:52,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:51:52,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:52,670 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:51:54,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:51:54,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:51:54,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:51:54,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:54,605 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 [2022-11-20 12:51:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-20 12:51:54,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:51:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:54,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258191051] [2022-11-20 12:51:54,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:54,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343728467] [2022-11-20 12:51:54,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343728467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:51:54,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:51:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:51:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330641373] [2022-11-20 12:51:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:51:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:51:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:51:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:51:54,649 INFO L87 Difference]: Start difference. First operand 528 states and 794 transitions. Second operand has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-11-20 12:51:56,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:03,798 INFO L93 Difference]: Finished difference Result 1078 states and 1714 transitions. [2022-11-20 12:52:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:52:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) Word has length 288 [2022-11-20 12:52:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:03,805 INFO L225 Difference]: With dead ends: 1078 [2022-11-20 12:52:03,805 INFO L226 Difference]: Without dead ends: 586 [2022-11-20 12:52:03,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:52:03,811 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 137 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 5787 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:03,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 5787 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-20 12:52:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-20 12:52:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 537. [2022-11-20 12:52:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 330 states have (on average 1.206060606060606) internal successors, (398), 334 states have internal predecessors, (398), 169 states have call successors, (169), 30 states have call predecessors, (169), 36 states have return successors, (259), 173 states have call predecessors, (259), 167 states have call successors, (259) [2022-11-20 12:52:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 826 transitions. [2022-11-20 12:52:03,901 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 826 transitions. Word has length 288 [2022-11-20 12:52:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:03,902 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 826 transitions. [2022-11-20 12:52:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.363636363636363) internal successors, (125), 12 states have internal predecessors, (125), 7 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2022-11-20 12:52:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 826 transitions. [2022-11-20 12:52:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-20 12:52:03,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:03,909 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:03,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:52:04,128 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash 372650132, now seen corresponding path program 1 times [2022-11-20 12:52:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:04,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791944361] [2022-11-20 12:52:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:04,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:52:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819482156] [2022-11-20 12:52:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:04,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:04,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:04,254 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:04,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:52:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-20 12:52:05,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:06,962 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 [2022-11-20 12:52:06,966 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 [2022-11-20 12:52:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-20 12:52:07,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:52:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791944361] [2022-11-20 12:52:07,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:52:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819482156] [2022-11-20 12:52:07,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819482156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:07,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:07,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 12:52:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902697240] [2022-11-20 12:52:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:52:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:52:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:52:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:52:07,012 INFO L87 Difference]: Start difference. First operand 537 states and 826 transitions. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-20 12:52:09,264 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 [] [2022-11-20 12:52:11,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:13,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:19,814 INFO L93 Difference]: Finished difference Result 1091 states and 1735 transitions. [2022-11-20 12:52:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:52:19,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 292 [2022-11-20 12:52:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:19,820 INFO L225 Difference]: With dead ends: 1091 [2022-11-20 12:52:19,820 INFO L226 Difference]: Without dead ends: 617 [2022-11-20 12:52:19,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 276 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:52:19,824 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 100 mSDsluCounter, 6095 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6702 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:19,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6702 Invalid, 1510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1330 Invalid, 1 Unknown, 169 Unchecked, 12.3s Time] [2022-11-20 12:52:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-20 12:52:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 566. [2022-11-20 12:52:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 349 states have (on average 1.1948424068767909) internal successors, (417), 353 states have internal predecessors, (417), 174 states have call successors, (174), 34 states have call predecessors, (174), 41 states have return successors, (279), 179 states have call predecessors, (279), 172 states have call successors, (279) [2022-11-20 12:52:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 870 transitions. [2022-11-20 12:52:19,870 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 870 transitions. Word has length 292 [2022-11-20 12:52:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:19,870 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 870 transitions. [2022-11-20 12:52:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 8 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-11-20 12:52:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 870 transitions. [2022-11-20 12:52:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-20 12:52:19,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:19,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:19,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:20,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1679238981, now seen corresponding path program 1 times [2022-11-20 12:52:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:20,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890679147] [2022-11-20 12:52:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:20,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:52:20,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677256030] [2022-11-20 12:52:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:20,178 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:20,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:52:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:21,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 3589 conjuncts, 253 conjunts are in the unsatisfiable core [2022-11-20 12:52:21,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:23,195 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-20 12:52:23,195 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 [2022-11-20 12:52:23,227 INFO L321 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2022-11-20 12:52:23,227 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 [2022-11-20 12:52:23,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:52:23,254 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 [2022-11-20 12:52:23,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:52:23,269 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 [2022-11-20 12:52:23,281 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 [2022-11-20 12:52:23,317 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:52:23,318 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 [2022-11-20 12:52:23,340 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 [2022-11-20 12:52:23,371 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 [2022-11-20 12:52:23,388 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 [2022-11-20 12:52:23,446 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 [2022-11-20 12:52:23,465 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 [2022-11-20 12:52:23,471 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 [2022-11-20 12:52:23,534 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 38 [2022-11-20 12:52:24,629 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7834 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7834) |c_#memory_int|)) (exists ((v_ArrVal_7835 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7835)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7837 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7837)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:52:25,271 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7842 Int) (v_ArrVal_7843 Int) (v_ArrVal_7839 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7843))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7839) |c_#memory_int|) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7842))))) is different from true [2022-11-20 12:52:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 357 proven. 44 refuted. 0 times theorem prover too weak. 96 trivial. 9 not checked. [2022-11-20 12:52:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:52:31,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890679147] [2022-11-20 12:52:31,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:52:31,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677256030] [2022-11-20 12:52:31,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677256030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:31,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:52:31,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-20 12:52:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027990121] [2022-11-20 12:52:31,735 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:52:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:52:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:52:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1921, Unknown=13, NotChecked=178, Total=2256 [2022-11-20 12:52:31,739 INFO L87 Difference]: Start difference. First operand 566 states and 870 transitions. Second operand has 44 states, 41 states have (on average 4.146341463414634) internal successors, (170), 41 states have internal predecessors, (170), 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) [2022-11-20 12:52:32,654 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7834 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7834) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7842 Int) (v_ArrVal_7843 Int) (v_ArrVal_7839 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7843))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7839) |c_#memory_int|) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7842))))) (exists ((v_ArrVal_7835 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7835)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7837 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7837)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:52:39,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:52:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:48,918 INFO L93 Difference]: Finished difference Result 1504 states and 2590 transitions. [2022-11-20 12:52:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-20 12:52:48,919 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 4.146341463414634) internal successors, (170), 41 states have internal predecessors, (170), 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 303 [2022-11-20 12:52:48,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:48,929 INFO L225 Difference]: With dead ends: 1504 [2022-11-20 12:52:48,929 INFO L226 Difference]: Without dead ends: 1026 [2022-11-20 12:52:48,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 338 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=459, Invalid=5679, Unknown=36, NotChecked=468, Total=6642 [2022-11-20 12:52:48,936 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 562 mSDsluCounter, 6353 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 6925 SdHoareTripleChecker+Invalid, 16942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11399 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:48,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 6925 Invalid, 16942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [545 Valid, 4998 Invalid, 0 Unknown, 11399 Unchecked, 11.2s Time] [2022-11-20 12:52:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-11-20 12:52:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 719. [2022-11-20 12:52:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 471 states have (on average 1.1889596602972399) internal successors, (560), 478 states have internal predecessors, (560), 189 states have call successors, (189), 44 states have call predecessors, (189), 57 states have return successors, (409), 197 states have call predecessors, (409), 187 states have call successors, (409) [2022-11-20 12:52:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1158 transitions. [2022-11-20 12:52:49,035 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1158 transitions. Word has length 303 [2022-11-20 12:52:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 1158 transitions. [2022-11-20 12:52:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 4.146341463414634) internal successors, (170), 41 states have internal predecessors, (170), 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) [2022-11-20 12:52:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1158 transitions. [2022-11-20 12:52:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 12:52:49,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:49,040 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:49,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:49,258 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1939384409, now seen corresponding path program 1 times [2022-11-20 12:52:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:49,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992514718] [2022-11-20 12:52:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:49,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:52:49,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331872216] [2022-11-20 12:52:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:49,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:49,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:49,375 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:49,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:52:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:52:50,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3594 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:52:50,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-20 12:52:50,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:52:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:52:50,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992514718] [2022-11-20 12:52:50,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:52:50,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331872216] [2022-11-20 12:52:50,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331872216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:52:50,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:52:50,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:52:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836626560] [2022-11-20 12:52:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:52:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:52:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:52:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:52:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:52:50,771 INFO L87 Difference]: Start difference. First operand 719 states and 1158 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2022-11-20 12:52:52,049 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 [] [2022-11-20 12:52:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:53,234 INFO L93 Difference]: Finished difference Result 1410 states and 2451 transitions. [2022-11-20 12:52:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:52:53,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 305 [2022-11-20 12:52:53,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:53,241 INFO L225 Difference]: With dead ends: 1410 [2022-11-20 12:52:53,242 INFO L226 Difference]: Without dead ends: 727 [2022-11-20 12:52:53,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:52:53,247 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 15 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:53,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2348 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 12:52:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-20 12:52:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 720. [2022-11-20 12:52:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 472 states have (on average 1.1864406779661016) internal successors, (560), 479 states have internal predecessors, (560), 189 states have call successors, (189), 44 states have call predecessors, (189), 57 states have return successors, (409), 197 states have call predecessors, (409), 187 states have call successors, (409) [2022-11-20 12:52:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1158 transitions. [2022-11-20 12:52:53,324 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1158 transitions. Word has length 305 [2022-11-20 12:52:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:53,324 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1158 transitions. [2022-11-20 12:52:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2022-11-20 12:52:53,325 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1158 transitions. [2022-11-20 12:52:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 12:52:53,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:53,329 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:53,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 12:52:53,544 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2033383984, now seen corresponding path program 2 times [2022-11-20 12:52:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:53,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478828630] [2022-11-20 12:52:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:53,640 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:52:53,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418390308] [2022-11-20 12:52:53,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:52:53,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:53,642 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:53,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:52:54,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:52:54,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:52:54,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3598 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 12:52:54,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:52:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 300 proven. 16 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-20 12:52:55,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 79 proven. 45 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-20 12:52:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:52:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478828630] [2022-11-20 12:52:56,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:52:56,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418390308] [2022-11-20 12:52:56,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418390308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:52:56,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:56,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2022-11-20 12:52:56,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604776767] [2022-11-20 12:52:56,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:52:56,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:52:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:52:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:52:56,759 INFO L87 Difference]: Start difference. First operand 720 states and 1158 transitions. Second operand has 29 states, 26 states have (on average 6.846153846153846) internal successors, (178), 22 states have internal predecessors, (178), 7 states have call successors, (40), 2 states have call predecessors, (40), 10 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-20 12:52:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:52:58,403 INFO L93 Difference]: Finished difference Result 1422 states and 2431 transitions. [2022-11-20 12:52:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:52:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.846153846153846) internal successors, (178), 22 states have internal predecessors, (178), 7 states have call successors, (40), 2 states have call predecessors, (40), 10 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) Word has length 311 [2022-11-20 12:52:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:52:58,410 INFO L225 Difference]: With dead ends: 1422 [2022-11-20 12:52:58,410 INFO L226 Difference]: Without dead ends: 838 [2022-11-20 12:52:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 590 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 12:52:58,416 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 42 mSDsluCounter, 14098 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 14756 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:52:58,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 14756 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 12:52:58,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-11-20 12:52:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 766. [2022-11-20 12:52:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 514 states have (on average 1.188715953307393) internal successors, (611), 519 states have internal predecessors, (611), 191 states have call successors, (191), 44 states have call predecessors, (191), 59 states have return successors, (439), 203 states have call predecessors, (439), 189 states have call successors, (439) [2022-11-20 12:52:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1241 transitions. [2022-11-20 12:52:58,536 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1241 transitions. Word has length 311 [2022-11-20 12:52:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:52:58,537 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1241 transitions. [2022-11-20 12:52:58,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.846153846153846) internal successors, (178), 22 states have internal predecessors, (178), 7 states have call successors, (40), 2 states have call predecessors, (40), 10 states have return successors, (44), 11 states have call predecessors, (44), 7 states have call successors, (44) [2022-11-20 12:52:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1241 transitions. [2022-11-20 12:52:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 12:52:58,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:52:58,541 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:52:58,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:52:58,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:52:58,759 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:52:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:52:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash 553447017, now seen corresponding path program 1 times [2022-11-20 12:52:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:52:58,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768045517] [2022-11-20 12:52:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:52:58,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:52:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438147953] [2022-11-20 12:52:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:52:58,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:52:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:52:58,859 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:52:58,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:53:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:53:00,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3589 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:53:00,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:53:00,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:53:00,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:53:00,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768045517] [2022-11-20 12:53:00,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:53:00,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438147953] [2022-11-20 12:53:00,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438147953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:53:00,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:53:00,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:53:00,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579946] [2022-11-20 12:53:00,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:53:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:53:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:53:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:53:00,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:53:00,272 INFO L87 Difference]: Start difference. First operand 766 states and 1241 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:53:02,353 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 [] [2022-11-20 12:53:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:02,621 INFO L93 Difference]: Finished difference Result 1482 states and 2607 transitions. [2022-11-20 12:53:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:53:02,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 305 [2022-11-20 12:53:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:02,626 INFO L225 Difference]: With dead ends: 1482 [2022-11-20 12:53:02,626 INFO L226 Difference]: Without dead ends: 752 [2022-11-20 12:53:02,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:53:02,631 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 10 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:02,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2363 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 12:53:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-20 12:53:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 748. [2022-11-20 12:53:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 498 states have (on average 1.1847389558232932) internal successors, (590), 502 states have internal predecessors, (590), 191 states have call successors, (191), 44 states have call predecessors, (191), 57 states have return successors, (400), 202 states have call predecessors, (400), 189 states have call successors, (400) [2022-11-20 12:53:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1181 transitions. [2022-11-20 12:53:02,749 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1181 transitions. Word has length 305 [2022-11-20 12:53:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:02,750 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1181 transitions. [2022-11-20 12:53:02,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 12:53:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1181 transitions. [2022-11-20 12:53:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-20 12:53:02,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:02,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:02,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:02,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:53:02,959 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:53:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -354546939, now seen corresponding path program 3 times [2022-11-20 12:53:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:53:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550046975] [2022-11-20 12:53:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:53:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:53:03,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:53:03,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368190838] [2022-11-20 12:53:03,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:53:03,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:53:03,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:53:03,058 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:53:03,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:53:05,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 12:53:05,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-20 12:53:05,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:05,757 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_9343 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9343)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_9345 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9345)))))) is different from true [2022-11-20 12:53:05,787 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9343 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (v_ArrVal_9345 Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| 0) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9345))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9343)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:53:05,954 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:53:05,955 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 [2022-11-20 12:53:05,981 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:53:05,981 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 [2022-11-20 12:53:06,742 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_9348 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9348)))) (exists ((v_ArrVal_9349 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9349)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-20 12:53:06,773 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (v_ArrVal_9348 Int) (v_ArrVal_9349 Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| 0) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9349)) |c_#memory_$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|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9348))))) is different from true [2022-11-20 12:53:06,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:06,840 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 33 treesize of output 32 [2022-11-20 12:53:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:53:06,845 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 33 treesize of output 32 [2022-11-20 12:53:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 264 proven. 13 refuted. 0 times theorem prover too weak. 189 trivial. 46 not checked. [2022-11-20 12:53:07,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:53:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:53:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550046975] [2022-11-20 12:53:07,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:53:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368190838] [2022-11-20 12:53:07,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368190838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:53:07,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:53:07,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-20 12:53:07,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892462211] [2022-11-20 12:53:07,985 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:53:07,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:53:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:53:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:53:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=727, Unknown=4, NotChecked=228, Total=1056 [2022-11-20 12:53:07,987 INFO L87 Difference]: Start difference. First operand 748 states and 1181 transitions. Second operand has 27 states, 25 states have (on average 6.28) internal successors, (157), 25 states have internal predecessors, (157), 13 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-20 12:53:08,892 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_9348 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9348)))) (exists ((v_ArrVal_9349 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9349)) |c_#memory_$Pointer$.base|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_9343 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9343)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_9345 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_9345))))))) is different from true [2022-11-20 12:53:43,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:53:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:53:55,040 INFO L93 Difference]: Finished difference Result 1791 states and 3240 transitions. [2022-11-20 12:53:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 12:53:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.28) internal successors, (157), 25 states have internal predecessors, (157), 13 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) Word has length 307 [2022-11-20 12:53:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:53:55,052 INFO L225 Difference]: With dead ends: 1791 [2022-11-20 12:53:55,052 INFO L226 Difference]: Without dead ends: 1200 [2022-11-20 12:53:55,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 294 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=240, Invalid=2018, Unknown=18, NotChecked=480, Total=2756 [2022-11-20 12:53:55,056 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 326 mSDsluCounter, 7226 mSDsCounter, 0 mSdLazyCounter, 9713 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 7860 SdHoareTripleChecker+Invalid, 14577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 9713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4576 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:53:55,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 7860 Invalid, 14577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 9713 Invalid, 0 Unknown, 4576 Unchecked, 19.3s Time] [2022-11-20 12:53:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-11-20 12:53:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 829. [2022-11-20 12:53:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 558 states have (on average 1.1774193548387097) internal successors, (657), 564 states have internal predecessors, (657), 204 states have call successors, (204), 48 states have call predecessors, (204), 65 states have return successors, (521), 217 states have call predecessors, (521), 202 states have call successors, (521) [2022-11-20 12:53:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1382 transitions. [2022-11-20 12:53:55,224 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1382 transitions. Word has length 307 [2022-11-20 12:53:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:53:55,225 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1382 transitions. [2022-11-20 12:53:55,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.28) internal successors, (157), 25 states have internal predecessors, (157), 13 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (36), 13 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-20 12:53:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1382 transitions. [2022-11-20 12:53:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-20 12:53:55,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:53:55,230 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:53:55,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:53:55,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:53:55,456 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:53:55,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:53:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1080538053, now seen corresponding path program 4 times [2022-11-20 12:53:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:53:55,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935202519] [2022-11-20 12:53:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:53:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:53:55,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:53:55,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804823552] [2022-11-20 12:53:55,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:53:55,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:53:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:53:55,558 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:53:55,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 12:53:56,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:53:56,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:56,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3599 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-20 12:53:56,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:56,962 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 [2022-11-20 12:53:57,350 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 [2022-11-20 12:53:57,357 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 [2022-11-20 12:54:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:01,760 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 [2022-11-20 12:54:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:01,770 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 [2022-11-20 12:54:01,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:01,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:54:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:54:01,795 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 [2022-11-20 12:54:02,252 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9727 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9727))) (exists ((v_ArrVal_9728 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9728)))) is different from true [2022-11-20 12:54:03,086 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_9728 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728))) (and (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= .cse0 |c_#memory_$Pointer$.offset|)))))) (and (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9728 (Array Int Int)) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) is different from true [2022-11-20 12:54:03,207 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_9728 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728))) (and (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= .cse0 |c_#memory_$Pointer$.offset|)))))) (and (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9728 (Array Int Int)) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short853#1|)) is different from true [2022-11-20 12:54:03,529 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_9728 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728))) (and (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= .cse0 |c_#memory_$Pointer$.offset|)))))) (and (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9728 (Array Int Int)) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short864#1|)) is different from true [2022-11-20 12:54:03,579 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 [2022-11-20 12:54:03,583 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 [2022-11-20 12:54:03,604 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:54:03,605 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 34 treesize of output 40 [2022-11-20 12:54:03,611 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 [2022-11-20 12:54:03,617 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 [2022-11-20 12:54:05,638 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14|)) 0))) (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14|)) 0)))) is different from true [2022-11-20 12:54:07,702 WARN L859 $PredicateComparison]: unable to prove that (and (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_9728 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728))) (and (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= .cse0 |c_#memory_$Pointer$.offset|)))))) (and (not (= (select (select |c_#memory_$Pointer$.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_9728 (Array Int Int)) (v_ArrVal_9727 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9727)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_9728) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)))))) (or (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14|)) 0))) (exists ((|v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14| Int) (|v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_priority_queue_is_valid_#in~queue#1.base_BEFORE_CALL_25|) (+ 40 |v_aws_priority_queue_is_valid_#in~queue#1.offset_BEFORE_CALL_14|)) 0))))) is different from true [2022-11-20 12:54:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 267 proven. 34 refuted. 0 times theorem prover too weak. 208 trivial. 3 not checked. [2022-11-20 12:54:07,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:54:09,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935202519] [2022-11-20 12:54:09,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:54:09,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804823552] [2022-11-20 12:54:09,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804823552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:54:09,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:54:09,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-20 12:54:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789894324] [2022-11-20 12:54:09,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:54:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:54:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:54:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=949, Unknown=13, NotChecked=402, Total=1482 [2022-11-20 12:54:09,084 INFO L87 Difference]: Start difference. First operand 829 states and 1382 transitions. Second operand has 35 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 14 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 11 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-20 12:54:51,931 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 [] [2022-11-20 12:54:55,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:54:56,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:01,267 INFO L93 Difference]: Finished difference Result 1923 states and 3394 transitions. [2022-11-20 12:55:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 12:55:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 14 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 11 states have call predecessors, (36), 14 states have call successors, (36) Word has length 307 [2022-11-20 12:55:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:01,276 INFO L225 Difference]: With dead ends: 1923 [2022-11-20 12:55:01,276 INFO L226 Difference]: Without dead ends: 1155 [2022-11-20 12:55:01,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 442 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=229, Invalid=1911, Unknown=46, NotChecked=570, Total=2756 [2022-11-20 12:55:01,299 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 247 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 6571 SdHoareTripleChecker+Invalid, 13513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9103 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:01,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 6571 Invalid, 13513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [239 Valid, 4171 Invalid, 0 Unknown, 9103 Unchecked, 11.2s Time] [2022-11-20 12:55:01,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-11-20 12:55:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 925. [2022-11-20 12:55:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 635 states have (on average 1.1716535433070867) internal successors, (744), 645 states have internal predecessors, (744), 214 states have call successors, (214), 53 states have call predecessors, (214), 74 states have return successors, (613), 227 states have call predecessors, (613), 212 states have call successors, (613) [2022-11-20 12:55:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1571 transitions. [2022-11-20 12:55:01,438 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1571 transitions. Word has length 307 [2022-11-20 12:55:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:01,438 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1571 transitions. [2022-11-20 12:55:01,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 14 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 11 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-20 12:55:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1571 transitions. [2022-11-20 12:55:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-20 12:55:01,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:01,444 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:01,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-20 12:55:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:55:01,662 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:55:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1183195198, now seen corresponding path program 1 times [2022-11-20 12:55:01,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:55:01,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358986787] [2022-11-20 12:55:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:55:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:55:01,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:55:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079841429] [2022-11-20 12:55:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:55:01,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:55:01,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:55:01,746 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:55:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 12:55:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:55:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 3638 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 12:55:03,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:03,373 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 [2022-11-20 12:55:03,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-20 12:55:03,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:03,645 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 [2022-11-20 12:55:05,794 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10138 Int)) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10138)))) is different from true [2022-11-20 12:55:05,805 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10138 Int)) (= |c_#memory_$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_10138)))) is different from true [2022-11-20 12:55:10,066 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 [2022-11-20 12:55:10,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:55:10,085 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 [2022-11-20 12:55:18,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-20 12:55:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 316 proven. 5 refuted. 0 times theorem prover too weak. 182 trivial. 10 not checked. [2022-11-20 12:55:18,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:55:24,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:55:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358986787] [2022-11-20 12:55:24,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:55:24,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079841429] [2022-11-20 12:55:24,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079841429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:55:24,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:55:24,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-20 12:55:24,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12972680] [2022-11-20 12:55:24,339 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:55:24,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:55:24,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:55:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:55:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=393, Unknown=9, NotChecked=82, Total=552 [2022-11-20 12:55:24,340 INFO L87 Difference]: Start difference. First operand 925 states and 1571 transitions. Second operand has 22 states, 20 states have (on average 7.9) internal successors, (158), 19 states have internal predecessors, (158), 14 states have call successors, (39), 5 states have call predecessors, (39), 9 states have return successors, (37), 14 states have call predecessors, (37), 14 states have call successors, (37) [2022-11-20 12:55:33,897 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 [] [2022-11-20 12:55:36,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:39,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:43,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:45,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:55:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:55:48,620 INFO L93 Difference]: Finished difference Result 1978 states and 3564 transitions. [2022-11-20 12:55:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:55:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 7.9) internal successors, (158), 19 states have internal predecessors, (158), 14 states have call successors, (39), 5 states have call predecessors, (39), 9 states have return successors, (37), 14 states have call predecessors, (37), 14 states have call successors, (37) Word has length 313 [2022-11-20 12:55:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:55:48,631 INFO L225 Difference]: With dead ends: 1978 [2022-11-20 12:55:48,632 INFO L226 Difference]: Without dead ends: 1190 [2022-11-20 12:55:48,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 467 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=109, Invalid=757, Unknown=12, NotChecked=114, Total=992 [2022-11-20 12:55:48,641 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 290 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 6801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4139 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:55:48,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 4783 Invalid, 6801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2420 Invalid, 1 Unknown, 4139 Unchecked, 17.6s Time] [2022-11-20 12:55:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-11-20 12:55:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1011. [2022-11-20 12:55:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 698 states have (on average 1.159025787965616) internal successors, (809), 713 states have internal predecessors, (809), 224 states have call successors, (224), 59 states have call predecessors, (224), 87 states have return successors, (745), 239 states have call predecessors, (745), 222 states have call successors, (745) [2022-11-20 12:55:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1778 transitions. [2022-11-20 12:55:48,836 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1778 transitions. Word has length 313 [2022-11-20 12:55:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:55:48,837 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1778 transitions. [2022-11-20 12:55:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 7.9) internal successors, (158), 19 states have internal predecessors, (158), 14 states have call successors, (39), 5 states have call predecessors, (39), 9 states have return successors, (37), 14 states have call predecessors, (37), 14 states have call successors, (37) [2022-11-20 12:55:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1778 transitions. [2022-11-20 12:55:48,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-20 12:55:48,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:55:48,844 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:48,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:55:49,063 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:55:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1207388529, now seen corresponding path program 1 times [2022-11-20 12:55:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:55:49,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033559050] [2022-11-20 12:55:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:55:49,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:55:49,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:55:49,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659969966] [2022-11-20 12:55:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:55:49,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:55:49,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:55:49,163 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:55:49,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 12:55:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:55:50,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-20 12:55:50,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:55:50,872 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 [2022-11-20 12:55:51,201 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 [2022-11-20 12:55:51,264 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 [2022-11-20 12:55:55,398 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 [2022-11-20 12:55:59,531 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 [2022-11-20 12:55:59,634 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-20 12:55:59,634 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 [2022-11-20 12:56:01,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:01,399 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 [2022-11-20 12:56:03,404 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10541 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10541))) is different from true [2022-11-20 12:56:12,123 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 [2022-11-20 12:56:16,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 279 proven. 22 refuted. 0 times theorem prover too weak. 212 trivial. 3 not checked. [2022-11-20 12:56:16,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:56:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:56:19,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033559050] [2022-11-20 12:56:19,053 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:56:19,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659969966] [2022-11-20 12:56:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659969966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:56:19,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:56:19,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-20 12:56:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903837231] [2022-11-20 12:56:19,054 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:56:19,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:56:19,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:56:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:56:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=711, Unknown=16, NotChecked=54, Total=870 [2022-11-20 12:56:19,056 INFO L87 Difference]: Start difference. First operand 1011 states and 1778 transitions. Second operand has 29 states, 27 states have (on average 6.0) internal successors, (162), 26 states have internal predecessors, (162), 14 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:56:29,709 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 [] [2022-11-20 12:56:33,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:56:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:56:37,594 INFO L93 Difference]: Finished difference Result 2277 states and 4166 transitions. [2022-11-20 12:56:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 12:56:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 6.0) internal successors, (162), 26 states have internal predecessors, (162), 14 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) Word has length 318 [2022-11-20 12:56:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:56:37,601 INFO L225 Difference]: With dead ends: 2277 [2022-11-20 12:56:37,601 INFO L226 Difference]: Without dead ends: 1354 [2022-11-20 12:56:37,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 459 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=185, Invalid=1591, Unknown=34, NotChecked=82, Total=1892 [2022-11-20 12:56:37,607 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 426 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 3928 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 8434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 3928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4004 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:56:37,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 5036 Invalid, 8434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 3928 Invalid, 0 Unknown, 4004 Unchecked, 9.7s Time] [2022-11-20 12:56:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-11-20 12:56:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1143. [2022-11-20 12:56:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 804 states have (on average 1.1554726368159205) internal successors, (929), 826 states have internal predecessors, (929), 235 states have call successors, (235), 65 states have call predecessors, (235), 102 states have return successors, (897), 252 states have call predecessors, (897), 233 states have call successors, (897) [2022-11-20 12:56:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 2061 transitions. [2022-11-20 12:56:37,790 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 2061 transitions. Word has length 318 [2022-11-20 12:56:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:56:37,791 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 2061 transitions. [2022-11-20 12:56:37,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 6.0) internal successors, (162), 26 states have internal predecessors, (162), 14 states have call successors, (40), 8 states have call predecessors, (40), 13 states have return successors, (38), 13 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:56:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 2061 transitions. [2022-11-20 12:56:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-20 12:56:37,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:56:37,798 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2022-11-20 12:56:37,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:56:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:38,016 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:56:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:56:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1047977854, now seen corresponding path program 1 times [2022-11-20 12:56:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:56:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815871032] [2022-11-20 12:56:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:56:38,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:56:38,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146317413] [2022-11-20 12:56:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:56:38,118 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:56:38,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 12:56:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:39,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 3638 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-20 12:56:39,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:56:39,696 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 [2022-11-20 12:56:40,087 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 [2022-11-20 12:56:40,430 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 [2022-11-20 12:56:40,433 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 [2022-11-20 12:56:40,479 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10938 Int) (|bounded_malloc_#res.base| Int)) (and (= (select |c_old(#valid)| |bounded_malloc_#res.base|) 0) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_10938)))) (exists ((v_ArrVal_10941 Int) (v_ArrVal_10940 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_10940) ensure_array_list_has_allocated_data_member_~list.offset v_ArrVal_10941)) |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 [2022-11-20 12:56:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:40,510 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 [2022-11-20 12:56:40,534 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:56:40,534 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 [2022-11-20 12:56:40,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:40,548 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 [2022-11-20 12:56:40,799 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10945 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10945) |c_#memory_int|)) is different from true [2022-11-20 12:56:42,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 275 proven. 27 refuted. 0 times theorem prover too weak. 206 trivial. 5 not checked. [2022-11-20 12:56:42,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:56:44,487 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 10 treesize of output 4 [2022-11-20 12:56:44,498 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 10 treesize of output 4 [2022-11-20 12:56:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:56:44,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815871032] [2022-11-20 12:56:44,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:56:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146317413] [2022-11-20 12:56:44,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146317413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:56:44,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:56:44,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-20 12:56:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459519990] [2022-11-20 12:56:44,631 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:56:44,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:56:44,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:56:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:56:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1578, Unknown=18, NotChecked=162, Total=1892 [2022-11-20 12:56:44,633 INFO L87 Difference]: Start difference. First operand 1143 states and 2061 transitions. Second operand has 35 states, 33 states have (on average 4.909090909090909) internal successors, (162), 29 states have internal predecessors, (162), 15 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-20 12:56:48,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:56:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:56:55,489 INFO L93 Difference]: Finished difference Result 2395 states and 4413 transitions. [2022-11-20 12:56:55,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 12:56:55,489 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.909090909090909) internal successors, (162), 29 states have internal predecessors, (162), 15 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) Word has length 313 [2022-11-20 12:56:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:56:55,502 INFO L225 Difference]: With dead ends: 2395 [2022-11-20 12:56:55,502 INFO L226 Difference]: Without dead ends: 1385 [2022-11-20 12:56:55,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 442 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=239, Invalid=2700, Unknown=39, NotChecked=214, Total=3192 [2022-11-20 12:56:55,511 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 684 mSDsluCounter, 6680 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 7290 SdHoareTripleChecker+Invalid, 11962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6846 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:56:55,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 7290 Invalid, 11962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1108 Valid, 4008 Invalid, 0 Unknown, 6846 Unchecked, 9.5s Time] [2022-11-20 12:56:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2022-11-20 12:56:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1158. [2022-11-20 12:56:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 817 states have (on average 1.1554467564259485) internal successors, (944), 839 states have internal predecessors, (944), 236 states have call successors, (236), 66 states have call predecessors, (236), 103 states have return successors, (899), 253 states have call predecessors, (899), 234 states have call successors, (899) [2022-11-20 12:56:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2079 transitions. [2022-11-20 12:56:55,732 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2079 transitions. Word has length 313 [2022-11-20 12:56:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:56:55,733 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 2079 transitions. [2022-11-20 12:56:55,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.909090909090909) internal successors, (162), 29 states have internal predecessors, (162), 15 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (37), 13 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-20 12:56:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2079 transitions. [2022-11-20 12:56:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-20 12:56:55,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:56:55,765 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:56:55,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:56:55,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 12:56:55,980 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:56:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:56:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash 945320709, now seen corresponding path program 2 times [2022-11-20 12:56:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:56:55,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343759137] [2022-11-20 12:56:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:55,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:56:56,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:56:56,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387414539] [2022-11-20 12:56:56,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:56:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:56:56,155 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:56:56,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 12:56:58,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:56:58,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:56:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 3599 conjuncts, 214 conjunts are in the unsatisfiable core [2022-11-20 12:56:58,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:56:58,410 INFO L321 Elim1Store]: treesize reduction 75, result has 10.7 percent of original size [2022-11-20 12:56:58,411 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 79 treesize of output 96 [2022-11-20 12:56:58,453 INFO L321 Elim1Store]: treesize reduction 75, result has 10.7 percent of original size [2022-11-20 12:56:58,453 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 [2022-11-20 12:56:58,478 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 [2022-11-20 12:56:58,505 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 [2022-11-20 12:56:58,596 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 [2022-11-20 12:56:58,629 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 [2022-11-20 12:56:58,662 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 [2022-11-20 12:56:58,742 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 [2022-11-20 12:56:58,887 INFO L321 Elim1Store]: treesize reduction 16, result has 46.7 percent of original size [2022-11-20 12:56:58,888 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 189 treesize of output 152 [2022-11-20 12:56:59,121 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 [2022-11-20 12:56:59,152 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 [2022-11-20 12:57:00,279 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11350 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11350)))) (exists ((v_ArrVal_11352 Int)) (= |c_#memory_$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_11352))))) is different from true [2022-11-20 12:57:01,645 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11355 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_11357 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11357))) (= |c_#memory_$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_11355))))) is different from true [2022-11-20 12:57:01,672 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11355 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_11357 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11355))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_11357))))) is different from true [2022-11-20 12:57:11,957 INFO L321 Elim1Store]: treesize reduction 44, result has 43.6 percent of original size [2022-11-20 12:57:11,957 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 287 treesize of output 381 [2022-11-20 12:57:12,113 INFO L217 Elim1Store]: Index analysis took 124 ms [2022-11-20 12:57:12,357 INFO L321 Elim1Store]: treesize reduction 44, result has 43.6 percent of original size [2022-11-20 12:57:12,358 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 207 treesize of output 301 [2022-11-20 12:57:12,783 INFO L321 Elim1Store]: treesize reduction 4, result has 95.1 percent of original size [2022-11-20 12:57:12,784 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 135 treesize of output 201 [2022-11-20 12:57:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 351 proven. 22 refuted. 0 times theorem prover too weak. 114 trivial. 25 not checked. [2022-11-20 12:57:13,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:57:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:57:18,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343759137] [2022-11-20 12:57:18,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:57:18,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387414539] [2022-11-20 12:57:18,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387414539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:57:18,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:57:18,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-11-20 12:57:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264567029] [2022-11-20 12:57:18,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:57:18,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:57:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:57:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:57:18,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1531, Unknown=7, NotChecked=240, Total=1892 [2022-11-20 12:57:18,159 INFO L87 Difference]: Start difference. First operand 1158 states and 2079 transitions. Second operand has 38 states, 34 states have (on average 5.088235294117647) internal successors, (173), 35 states have internal predecessors, (173), 14 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:57:19,106 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11355 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_11357 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11357))) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11355))))) (exists ((v_ArrVal_11350 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11350)))) (exists ((v_ArrVal_11352 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11352))))) is different from true [2022-11-20 12:57:24,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:57:31,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:57:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:57:42,998 INFO L93 Difference]: Finished difference Result 2553 states and 4984 transitions. [2022-11-20 12:57:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 12:57:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 5.088235294117647) internal successors, (173), 35 states have internal predecessors, (173), 14 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) Word has length 307 [2022-11-20 12:57:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:57:43,017 INFO L225 Difference]: With dead ends: 2553 [2022-11-20 12:57:43,017 INFO L226 Difference]: Without dead ends: 1664 [2022-11-20 12:57:43,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=274, Invalid=3760, Unknown=14, NotChecked=508, Total=4556 [2022-11-20 12:57:43,026 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 296 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 6339 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 9562 SdHoareTripleChecker+Invalid, 18124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 6339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11524 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:57:43,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 9562 Invalid, 18124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [261 Valid, 6339 Invalid, 0 Unknown, 11524 Unchecked, 16.9s Time] [2022-11-20 12:57:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-11-20 12:57:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1229. [2022-11-20 12:57:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 878 states have (on average 1.1583143507972664) internal successors, (1017), 899 states have internal predecessors, (1017), 243 states have call successors, (243), 68 states have call predecessors, (243), 106 states have return successors, (970), 262 states have call predecessors, (970), 241 states have call successors, (970) [2022-11-20 12:57:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2230 transitions. [2022-11-20 12:57:43,365 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2230 transitions. Word has length 307 [2022-11-20 12:57:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:57:43,366 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 2230 transitions. [2022-11-20 12:57:43,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 5.088235294117647) internal successors, (173), 35 states have internal predecessors, (173), 14 states have call successors, (40), 5 states have call predecessors, (40), 10 states have return successors, (38), 12 states have call predecessors, (38), 14 states have call successors, (38) [2022-11-20 12:57:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2230 transitions. [2022-11-20 12:57:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-20 12:57:43,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:57:43,377 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:57:43,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:57:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:57:43,591 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:57:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:57:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -363045842, now seen corresponding path program 1 times [2022-11-20 12:57:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:57:43,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204107059] [2022-11-20 12:57:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:57:43,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:57:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477893962] [2022-11-20 12:57:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:43,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:57:43,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:57:43,696 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:57:43,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66ec4fc-4fb5-4b8a-be6a-0c014f09003d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 12:57:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:57:45,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 3703 conjuncts, 335 conjunts are in the unsatisfiable core [2022-11-20 12:57:45,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:57:49,411 INFO L321 Elim1Store]: treesize reduction 202, result has 11.8 percent of original size [2022-11-20 12:57:49,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 148 [2022-11-20 12:57:49,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:57:49,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 278 [2022-11-20 12:57:49,540 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:57:49,540 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 28 treesize of output 34 [2022-11-20 12:57:49,595 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:57:49,595 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 26 treesize of output 32 [2022-11-20 12:57:49,622 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 [2022-11-20 12:57:49,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 215 treesize of output 66 [2022-11-20 12:57:49,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-20 12:57:49,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-20 12:57:50,191 INFO L321 Elim1Store]: treesize reduction 4, result has 87.1 percent of original size [2022-11-20 12:57:50,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 50 [2022-11-20 12:57:50,280 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 219 treesize of output 159 [2022-11-20 12:57:52,248 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11818 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_11818) |c_#memory_int|)) (exists ((v_ArrVal_11820 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11820)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_11817 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_11817)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:58:02,022 INFO L321 Elim1Store]: treesize reduction 60, result has 49.2 percent of original size [2022-11-20 12:58:02,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 327 [2022-11-20 12:58:02,247 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 12:58:02,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 293 treesize of output 356 [2022-11-20 12:58:02,514 INFO L321 Elim1Store]: treesize reduction 60, result has 49.2 percent of original size [2022-11-20 12:58:02,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 389 [2022-11-20 12:58:02,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:58:02,618 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 275 treesize of output 294 [2022-11-20 12:58:20,060 INFO L321 Elim1Store]: treesize reduction 390, result has 23.8 percent of original size [2022-11-20 12:58:20,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 817 treesize of output 1476 [2022-11-20 12:58:22,213 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 11 treesize of output 7 [2022-11-20 12:58:25,837 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 11 treesize of output 7 [2022-11-20 12:58:29,373 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 11 treesize of output 7 [2022-11-20 12:58:39,486 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 11 treesize of output 7 [2022-11-20 12:58:40,341 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 11 treesize of output 7 [2022-11-20 12:58:41,700 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 11 treesize of output 7 [2022-11-20 12:58:42,362 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 11 treesize of output 7 [2022-11-20 12:58:43,119 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 11 treesize of output 7 [2022-11-20 12:58:44,321 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 11 treesize of output 7 [2022-11-20 12:58:54,204 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 11 treesize of output 7 [2022-11-20 12:58:55,396 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 11 treesize of output 7 [2022-11-20 12:58:56,383 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 11 treesize of output 7 [2022-11-20 12:58:57,030 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 11 treesize of output 7 [2022-11-20 12:58:57,334 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 11 treesize of output 7 [2022-11-20 12:59:00,191 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 11 treesize of output 7