./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:36:10,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:36:10,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:36:10,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:36:10,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:36:10,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:36:10,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:36:10,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:36:10,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:36:10,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:36:10,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:36:10,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:36:10,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:36:10,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:36:10,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:36:10,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:36:10,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:36:10,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:36:10,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:36:10,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:36:10,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:36:10,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:36:10,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:36:10,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:36:10,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:36:10,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:36:10,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:36:10,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:36:10,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:36:10,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:36:10,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:36:10,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:36:10,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:36:10,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:36:10,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:36:10,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:36:10,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:36:10,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:36:10,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:36:10,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:36:10,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:36:10,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:36:10,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:36:10,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:36:10,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:36:10,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:36:10,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:36:10,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:36:10,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:36:10,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:36:10,537 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:36:10,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:36:10,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:36:10,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:36:10,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:36:10,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:36:10,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:36:10,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:36:10,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:36:10,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:36:10,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:36:10,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:36:10,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:36:10,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:10,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:36:10,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:36:10,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:36:10,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:36:10,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:36:10,556 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:36:10,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:36:10,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:36:10,557 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_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2022-11-16 12:36:10,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:36:10,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:36:10,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:36:10,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:36:10,969 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:36:10,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2022-11-16 12:36:11,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/data/963058096/43643cd017d74289a5576beb09e9c4eb/FLAGb756891e8 [2022-11-16 12:36:12,012 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:36:12,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2022-11-16 12:36:12,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/data/963058096/43643cd017d74289a5576beb09e9c4eb/FLAGb756891e8 [2022-11-16 12:36:12,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/data/963058096/43643cd017d74289a5576beb09e9c4eb [2022-11-16 12:36:12,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:36:12,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:36:12,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:12,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:36:12,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:36:12,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:12" (1/1) ... [2022-11-16 12:36:12,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603958c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:12, skipping insertion in model container [2022-11-16 12:36:12,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:12" (1/1) ... [2022-11-16 12:36:12,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:36:12,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:36:13,010 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2022-11-16 12:36:13,019 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2022-11-16 12:36:14,010 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,014 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,015 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,017 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,020 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,048 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,051 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,053 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,059 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,065 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,077 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,078 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,078 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:36:14,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:36:14,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:36:14,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:36:14,498 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:36:14,499 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:36:14,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:36:14,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:36:14,501 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:36:14,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:36:14,718 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:36:14,747 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,747 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,753 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,762 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,837 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,838 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,838 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,839 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,839 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,840 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,840 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,841 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,842 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,842 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,843 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,843 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,843 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,847 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,847 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,848 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,848 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,852 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,853 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,861 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,862 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,863 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:14,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:14,903 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:36:14,919 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2022-11-16 12:36:14,920 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2022-11-16 12:36:15,018 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,018 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,019 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,020 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,021 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,029 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,030 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,060 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,060 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,062 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,062 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,062 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,063 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,123 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 12:36:15,124 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 12:36:15,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 12:36:15,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 12:36:15,127 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 12:36:15,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 12:36:15,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 12:36:15,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 12:36:15,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 12:36:15,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 12:36:15,183 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 12:36:15,217 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,220 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,222 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,229 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,292 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,293 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,293 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,294 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,295 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,296 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,296 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,297 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,299 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,299 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,300 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,301 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,302 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,303 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,305 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,306 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,306 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,309 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,310 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,320 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,321 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,322 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 12:36:15,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:15,743 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:36:15,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15 WrapperNode [2022-11-16 12:36:15,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:15,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:15,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:36:15,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:36:15,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:15,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:15,960 INFO L138 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2022-11-16 12:36:15,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:15,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:36:15,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:36:15,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:36:15,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:15,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:15,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:15,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:36:16,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:36:16,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:36:16,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:36:16,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (1/1) ... [2022-11-16 12:36:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:16,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:16,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:36:16,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:36:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2022-11-16 12:36:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2022-11-16 12:36:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-16 12:36:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-16 12:36:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-16 12:36:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-16 12:36:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:36:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 12:36:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 12:36:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 12:36:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 12:36:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 12:36:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 12:36:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-16 12:36:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-16 12:36:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:36:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 12:36:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 12:36:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:36:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:36:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:36:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:36:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:36:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-16 12:36:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-16 12:36:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 12:36:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 12:36:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:36:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:36:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 12:36:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 12:36:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 12:36:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 12:36:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-16 12:36:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-16 12:36:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-16 12:36:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-16 12:36:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 12:36:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 12:36:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:36:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:36:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 12:36:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 12:36:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:36:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:36:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:36:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-16 12:36:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-16 12:36:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 12:36:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 12:36:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 12:36:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 12:36:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:36:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:36:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 12:36:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:36:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-16 12:36:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:36:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-16 12:36:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:36:16,688 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:36:16,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:36:18,246 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:36:18,273 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:36:18,274 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:36:18,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:18 BoogieIcfgContainer [2022-11-16 12:36:18,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:36:18,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:36:18,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:36:18,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:36:18,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:36:12" (1/3) ... [2022-11-16 12:36:18,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e87ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:18, skipping insertion in model container [2022-11-16 12:36:18,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:15" (2/3) ... [2022-11-16 12:36:18,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e87ae08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:18, skipping insertion in model container [2022-11-16 12:36:18,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:18" (3/3) ... [2022-11-16 12:36:18,295 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2022-11-16 12:36:18,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:36:18,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:36:18,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:36:18,447 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;@72ff8565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:36:18,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:36:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 210 states have (on average 1.2571428571428571) internal successors, (264), 213 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-16 12:36:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:36:18,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:18,495 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2022-11-16 12:36:18,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -690035522, now seen corresponding path program 1 times [2022-11-16 12:36:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:18,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155651359] [2022-11-16 12:36:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:36:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:36:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:36:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:36:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:36:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:36:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:36:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:36:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:36:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:36:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:36:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 12:36:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-16 12:36:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155651359] [2022-11-16 12:36:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155651359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:36:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430069106] [2022-11-16 12:36:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:19,652 INFO L87 Difference]: Start difference. First operand has 350 states, 210 states have (on average 1.2571428571428571) internal successors, (264), 213 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:36:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:21,661 INFO L93 Difference]: Finished difference Result 805 states and 1317 transitions. [2022-11-16 12:36:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2022-11-16 12:36:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:21,682 INFO L225 Difference]: With dead ends: 805 [2022-11-16 12:36:21,682 INFO L226 Difference]: Without dead ends: 461 [2022-11-16 12:36:21,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:21,695 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 139 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:21,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 655 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:36:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-16 12:36:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 343. [2022-11-16 12:36:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 205 states have (on average 1.2195121951219512) internal successors, (250), 207 states have internal predecessors, (250), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-16 12:36:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 474 transitions. [2022-11-16 12:36:21,795 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 474 transitions. Word has length 103 [2022-11-16 12:36:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:21,796 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 474 transitions. [2022-11-16 12:36:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:36:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 474 transitions. [2022-11-16 12:36:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:36:21,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:21,800 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2022-11-16 12:36:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:36:21,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:21,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash -161641532, now seen corresponding path program 1 times [2022-11-16 12:36:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:21,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070909794] [2022-11-16 12:36:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:21,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:36:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:36:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:36:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:36:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:36:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:36:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:36:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:36:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:36:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:36:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:36:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 12:36:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 12:36:22,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070909794] [2022-11-16 12:36:22,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070909794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:22,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063695528] [2022-11-16 12:36:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:22,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:22,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:22,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:22,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:36:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:23,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:36:23,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-16 12:36:23,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:23,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063695528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:23,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:36:23,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 12:36:23,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525160367] [2022-11-16 12:36:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:23,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:36:23,279 INFO L87 Difference]: Start difference. First operand 343 states and 474 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:36:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:23,348 INFO L93 Difference]: Finished difference Result 429 states and 584 transitions. [2022-11-16 12:36:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2022-11-16 12:36:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:23,357 INFO L225 Difference]: With dead ends: 429 [2022-11-16 12:36:23,358 INFO L226 Difference]: Without dead ends: 344 [2022-11-16 12:36:23,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:36:23,360 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 0 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:23,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 941 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-16 12:36:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-11-16 12:36:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 206 states have (on average 1.2184466019417475) internal successors, (251), 208 states have internal predecessors, (251), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-16 12:36:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 475 transitions. [2022-11-16 12:36:23,436 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 475 transitions. Word has length 103 [2022-11-16 12:36:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 475 transitions. [2022-11-16 12:36:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:36:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 475 transitions. [2022-11-16 12:36:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 12:36:23,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:23,441 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:23,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:23,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2109657165, now seen corresponding path program 1 times [2022-11-16 12:36:23,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:23,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619113440] [2022-11-16 12:36:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:36:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:36:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:36:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:36:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:36:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:36:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:36:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 12:36:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:36:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:36:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:36:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:36:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:36:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:36:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-16 12:36:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-16 12:36:24,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:24,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619113440] [2022-11-16 12:36:24,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619113440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:24,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248131769] [2022-11-16 12:36:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:24,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:24,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:24,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:36:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:36:25,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-16 12:36:25,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:25,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248131769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:25,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:36:25,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 12:36:25,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064808044] [2022-11-16 12:36:25,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:25,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:25,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:36:25,264 INFO L87 Difference]: Start difference. First operand 344 states and 475 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 12:36:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:25,568 INFO L93 Difference]: Finished difference Result 654 states and 914 transitions. [2022-11-16 12:36:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:36:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 122 [2022-11-16 12:36:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:25,573 INFO L225 Difference]: With dead ends: 654 [2022-11-16 12:36:25,573 INFO L226 Difference]: Without dead ends: 346 [2022-11-16 12:36:25,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:25,576 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 492 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:25,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1661 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:36:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-16 12:36:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-11-16 12:36:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 207 states have (on average 1.2173913043478262) internal successors, (252), 210 states have internal predecessors, (252), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2022-11-16 12:36:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 484 transitions. [2022-11-16 12:36:25,613 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 484 transitions. Word has length 122 [2022-11-16 12:36:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:25,614 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 484 transitions. [2022-11-16 12:36:25,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 12:36:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 484 transitions. [2022-11-16 12:36:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 12:36:25,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:25,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:25,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:25,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1370525804, now seen corresponding path program 1 times [2022-11-16 12:36:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:25,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25869630] [2022-11-16 12:36:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:36:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:36:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:36:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:36:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:36:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:36:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:36:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:36:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:36:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:36:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:36:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 12:36:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-16 12:36:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 12:36:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 12:36:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 12:36:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 12:36:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-16 12:36:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-16 12:36:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:26,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25869630] [2022-11-16 12:36:26,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25869630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:36:26,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338163775] [2022-11-16 12:36:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:26,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:26,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:36:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:27,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:36:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-16 12:36:27,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:27,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338163775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:27,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:36:27,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-16 12:36:27,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485144362] [2022-11-16 12:36:27,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:36:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:27,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:36:27,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:27,425 INFO L87 Difference]: Start difference. First operand 346 states and 484 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:36:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:27,823 INFO L93 Difference]: Finished difference Result 677 states and 969 transitions. [2022-11-16 12:36:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:36:27,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-11-16 12:36:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:27,827 INFO L225 Difference]: With dead ends: 677 [2022-11-16 12:36:27,828 INFO L226 Difference]: Without dead ends: 367 [2022-11-16 12:36:27,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:36:27,831 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 95 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:27,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 2519 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:36:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-16 12:36:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-11-16 12:36:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 223 states have (on average 1.2286995515695067) internal successors, (274), 226 states have internal predecessors, (274), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-11-16 12:36:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 521 transitions. [2022-11-16 12:36:27,866 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 521 transitions. Word has length 130 [2022-11-16 12:36:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:27,866 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 521 transitions. [2022-11-16 12:36:27,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:36:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 521 transitions. [2022-11-16 12:36:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 12:36:27,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:27,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:27,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:28,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2147450587, now seen corresponding path program 1 times [2022-11-16 12:36:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:28,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903146798] [2022-11-16 12:36:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:28,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:28,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748297080] [2022-11-16 12:36:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:28,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:28,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:28,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:28,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:36:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:28,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:36:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-16 12:36:28,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903146798] [2022-11-16 12:36:28,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748297080] [2022-11-16 12:36:28,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748297080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:28,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:28,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:36:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708023795] [2022-11-16 12:36:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:28,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:36:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:36:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:36:28,916 INFO L87 Difference]: Start difference. First operand 365 states and 521 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 12:36:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:29,364 INFO L93 Difference]: Finished difference Result 702 states and 1026 transitions. [2022-11-16 12:36:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:36:29,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 145 [2022-11-16 12:36:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:29,368 INFO L225 Difference]: With dead ends: 702 [2022-11-16 12:36:29,369 INFO L226 Difference]: Without dead ends: 373 [2022-11-16 12:36:29,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:36:29,372 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 516 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 2034 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:36:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-16 12:36:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 365. [2022-11-16 12:36:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 223 states have (on average 1.2286995515695067) internal successors, (274), 226 states have internal predecessors, (274), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-11-16 12:36:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 521 transitions. [2022-11-16 12:36:29,414 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 521 transitions. Word has length 145 [2022-11-16 12:36:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:29,415 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 521 transitions. [2022-11-16 12:36:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-16 12:36:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 521 transitions. [2022-11-16 12:36:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 12:36:29,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:29,459 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] [2022-11-16 12:36:29,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:29,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:29,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:29,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash -467005651, now seen corresponding path program 1 times [2022-11-16 12:36:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:29,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973944286] [2022-11-16 12:36:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:29,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:29,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818340158] [2022-11-16 12:36:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:29,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:29,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:36:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:30,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:36:30,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-16 12:36:30,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:30,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973944286] [2022-11-16 12:36:30,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:30,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818340158] [2022-11-16 12:36:30,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818340158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:30,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:30,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:36:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139790757] [2022-11-16 12:36:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:30,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:36:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:36:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:36:30,594 INFO L87 Difference]: Start difference. First operand 365 states and 521 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 12:36:31,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:31,092 INFO L93 Difference]: Finished difference Result 728 states and 1064 transitions. [2022-11-16 12:36:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:36:31,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2022-11-16 12:36:31,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:31,097 INFO L225 Difference]: With dead ends: 728 [2022-11-16 12:36:31,097 INFO L226 Difference]: Without dead ends: 399 [2022-11-16 12:36:31,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:36:31,100 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 117 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:31,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2883 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-16 12:36:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 365. [2022-11-16 12:36:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 223 states have (on average 1.2286995515695067) internal successors, (274), 226 states have internal predecessors, (274), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2022-11-16 12:36:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 521 transitions. [2022-11-16 12:36:31,131 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 521 transitions. Word has length 161 [2022-11-16 12:36:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:31,132 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 521 transitions. [2022-11-16 12:36:31,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-16 12:36:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 521 transitions. [2022-11-16 12:36:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-16 12:36:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:31,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:31,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:31,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:36:31,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:31,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash -298586752, now seen corresponding path program 1 times [2022-11-16 12:36:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:31,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736967466] [2022-11-16 12:36:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:31,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143115493] [2022-11-16 12:36:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:31,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:31,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:31,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:36:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:32,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:36:32,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-16 12:36:32,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:32,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736967466] [2022-11-16 12:36:32,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:32,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143115493] [2022-11-16 12:36:32,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143115493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:32,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:32,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:36:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392593377] [2022-11-16 12:36:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:36:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:36:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:36:32,283 INFO L87 Difference]: Start difference. First operand 365 states and 521 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-16 12:36:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:32,773 INFO L93 Difference]: Finished difference Result 667 states and 967 transitions. [2022-11-16 12:36:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:36:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 176 [2022-11-16 12:36:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:32,777 INFO L225 Difference]: With dead ends: 667 [2022-11-16 12:36:32,777 INFO L226 Difference]: Without dead ends: 367 [2022-11-16 12:36:32,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:36:32,780 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 533 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:32,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 2350 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-16 12:36:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2022-11-16 12:36:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 224 states have (on average 1.2276785714285714) internal successors, (275), 228 states have internal predecessors, (275), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2022-11-16 12:36:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 528 transitions. [2022-11-16 12:36:32,810 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 528 transitions. Word has length 176 [2022-11-16 12:36:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:32,810 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 528 transitions. [2022-11-16 12:36:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-16 12:36:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 528 transitions. [2022-11-16 12:36:32,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-16 12:36:32,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:32,815 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:32,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:33,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash -186285584, now seen corresponding path program 1 times [2022-11-16 12:36:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:33,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152064575] [2022-11-16 12:36:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:33,124 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:33,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636145768] [2022-11-16 12:36:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:33,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:33,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:33,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:36:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:33,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:36:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-16 12:36:34,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:34,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:34,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152064575] [2022-11-16 12:36:34,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:34,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636145768] [2022-11-16 12:36:34,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636145768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:34,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:34,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:36:34,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854053799] [2022-11-16 12:36:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:36:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:36:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:34,005 INFO L87 Difference]: Start difference. First operand 367 states and 528 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 12:36:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:34,720 INFO L93 Difference]: Finished difference Result 672 states and 982 transitions. [2022-11-16 12:36:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 199 [2022-11-16 12:36:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:34,725 INFO L225 Difference]: With dead ends: 672 [2022-11-16 12:36:34,725 INFO L226 Difference]: Without dead ends: 370 [2022-11-16 12:36:34,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:36:34,729 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 557 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:34,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 2689 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:36:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-16 12:36:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2022-11-16 12:36:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 225 states have (on average 1.2266666666666666) internal successors, (276), 229 states have internal predecessors, (276), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2022-11-16 12:36:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 529 transitions. [2022-11-16 12:36:34,758 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 529 transitions. Word has length 199 [2022-11-16 12:36:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:34,759 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 529 transitions. [2022-11-16 12:36:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-16 12:36:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 529 transitions. [2022-11-16 12:36:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-16 12:36:34,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:34,764 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:34,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:34,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:34,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash 157414643, now seen corresponding path program 2 times [2022-11-16 12:36:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:34,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160341336] [2022-11-16 12:36:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:35,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:35,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003304558] [2022-11-16 12:36:35,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:35,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:35,091 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:35,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:36:35,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:35,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:35,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:36:35,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-16 12:36:36,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:36,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160341336] [2022-11-16 12:36:36,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:36,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003304558] [2022-11-16 12:36:36,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003304558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:36,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:36,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:36:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073679718] [2022-11-16 12:36:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:36,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:36:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:36:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:36:36,097 INFO L87 Difference]: Start difference. First operand 368 states and 529 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-16 12:36:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:36,801 INFO L93 Difference]: Finished difference Result 664 states and 966 transitions. [2022-11-16 12:36:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 230 [2022-11-16 12:36:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:36,806 INFO L225 Difference]: With dead ends: 664 [2022-11-16 12:36:36,806 INFO L226 Difference]: Without dead ends: 370 [2022-11-16 12:36:36,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:36:36,809 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 551 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:36,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 3029 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:36:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-16 12:36:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-16 12:36:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 226 states have (on average 1.2256637168141593) internal successors, (277), 231 states have internal predecessors, (277), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (142), 114 states have call predecessors, (142), 113 states have call successors, (142) [2022-11-16 12:36:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 534 transitions. [2022-11-16 12:36:36,838 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 534 transitions. Word has length 230 [2022-11-16 12:36:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:36,839 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 534 transitions. [2022-11-16 12:36:36,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-16 12:36:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 534 transitions. [2022-11-16 12:36:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-11-16 12:36:36,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:36,845 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:36,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:37,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 447641373, now seen corresponding path program 1 times [2022-11-16 12:36:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:37,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533881730] [2022-11-16 12:36:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:37,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719341106] [2022-11-16 12:36:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:37,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:37,211 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:36:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:38,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:36:38,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-16 12:36:38,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:38,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533881730] [2022-11-16 12:36:38,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:38,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719341106] [2022-11-16 12:36:38,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719341106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:38,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:38,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:36:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026606783] [2022-11-16 12:36:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:36:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:36:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:36:38,317 INFO L87 Difference]: Start difference. First operand 370 states and 534 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:39,195 INFO L93 Difference]: Finished difference Result 666 states and 969 transitions. [2022-11-16 12:36:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:36:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 276 [2022-11-16 12:36:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:39,200 INFO L225 Difference]: With dead ends: 666 [2022-11-16 12:36:39,200 INFO L226 Difference]: Without dead ends: 370 [2022-11-16 12:36:39,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:36:39,203 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 578 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:39,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 3339 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:36:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-16 12:36:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2022-11-16 12:36:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 225 states have (on average 1.2266666666666666) internal successors, (276), 229 states have internal predecessors, (276), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (136), 114 states have call predecessors, (136), 113 states have call successors, (136) [2022-11-16 12:36:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 527 transitions. [2022-11-16 12:36:39,231 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 527 transitions. Word has length 276 [2022-11-16 12:36:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:39,232 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 527 transitions. [2022-11-16 12:36:39,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 527 transitions. [2022-11-16 12:36:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-16 12:36:39,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:39,237 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:39,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:39,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:39,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -548532414, now seen corresponding path program 1 times [2022-11-16 12:36:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:39,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786934764] [2022-11-16 12:36:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:39,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:39,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:39,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641885683] [2022-11-16 12:36:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:39,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:39,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:39,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:36:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:40,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:36:40,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 185 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-16 12:36:40,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-16 12:36:40,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:40,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786934764] [2022-11-16 12:36:40,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:40,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641885683] [2022-11-16 12:36:40,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641885683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:40,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:40,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-16 12:36:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972536351] [2022-11-16 12:36:40,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:40,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:36:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:40,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:36:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:40,975 INFO L87 Difference]: Start difference. First operand 368 states and 527 transitions. Second operand has 14 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) [2022-11-16 12:36:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:41,499 INFO L93 Difference]: Finished difference Result 690 states and 1005 transitions. [2022-11-16 12:36:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) Word has length 218 [2022-11-16 12:36:41,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:41,504 INFO L225 Difference]: With dead ends: 690 [2022-11-16 12:36:41,504 INFO L226 Difference]: Without dead ends: 387 [2022-11-16 12:36:41,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 421 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:36:41,507 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 275 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:41,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 2846 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-16 12:36:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2022-11-16 12:36:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 239 states have (on average 1.2343096234309623) internal successors, (295), 243 states have internal predecessors, (295), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2022-11-16 12:36:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 554 transitions. [2022-11-16 12:36:41,536 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 554 transitions. Word has length 218 [2022-11-16 12:36:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:41,537 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 554 transitions. [2022-11-16 12:36:41,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) [2022-11-16 12:36:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 554 transitions. [2022-11-16 12:36:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-16 12:36:41,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:41,540 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:41,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:41,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:36:41,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 294303300, now seen corresponding path program 2 times [2022-11-16 12:36:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:41,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249939496] [2022-11-16 12:36:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:41,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:41,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:41,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399491049] [2022-11-16 12:36:41,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:41,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:41,856 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:41,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:36:42,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:42,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:42,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:36:42,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-16 12:36:43,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:43,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:43,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249939496] [2022-11-16 12:36:43,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:43,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399491049] [2022-11-16 12:36:43,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399491049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:43,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:43,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:36:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690527343] [2022-11-16 12:36:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:36:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:36:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:43,082 INFO L87 Difference]: Start difference. First operand 384 states and 554 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-16 12:36:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:43,706 INFO L93 Difference]: Finished difference Result 673 states and 976 transitions. [2022-11-16 12:36:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 248 [2022-11-16 12:36:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:43,711 INFO L225 Difference]: With dead ends: 673 [2022-11-16 12:36:43,711 INFO L226 Difference]: Without dead ends: 391 [2022-11-16 12:36:43,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:36:43,714 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 561 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:43,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 2688 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:36:43,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-16 12:36:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 386. [2022-11-16 12:36:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 240 states have (on average 1.2333333333333334) internal successors, (296), 245 states have internal predecessors, (296), 116 states have call successors, (116), 24 states have call predecessors, (116), 28 states have return successors, (145), 116 states have call predecessors, (145), 114 states have call successors, (145) [2022-11-16 12:36:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 557 transitions. [2022-11-16 12:36:43,750 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 557 transitions. Word has length 248 [2022-11-16 12:36:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:43,751 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 557 transitions. [2022-11-16 12:36:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-11-16 12:36:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 557 transitions. [2022-11-16 12:36:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-16 12:36:43,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:43,754 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-16 12:36:43,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:43,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:43,967 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -764192827, now seen corresponding path program 1 times [2022-11-16 12:36:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:43,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529723973] [2022-11-16 12:36:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:44,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:44,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678533794] [2022-11-16 12:36:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:44,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:44,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:44,073 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:36:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:44,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:36:44,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-16 12:36:45,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:45,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529723973] [2022-11-16 12:36:45,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:45,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678533794] [2022-11-16 12:36:45,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678533794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:45,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:36:45,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949489706] [2022-11-16 12:36:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:36:45,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:45,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:36:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:36:45,014 INFO L87 Difference]: Start difference. First operand 386 states and 557 transitions. Second operand has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:45,575 INFO L93 Difference]: Finished difference Result 678 states and 983 transitions. [2022-11-16 12:36:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 256 [2022-11-16 12:36:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:45,584 INFO L225 Difference]: With dead ends: 678 [2022-11-16 12:36:45,584 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 12:36:45,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:45,587 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 181 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:45,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 3586 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:36:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 12:36:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 387. [2022-11-16 12:36:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 241 states have (on average 1.2323651452282158) internal successors, (297), 246 states have internal predecessors, (297), 116 states have call successors, (116), 24 states have call predecessors, (116), 28 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2022-11-16 12:36:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 556 transitions. [2022-11-16 12:36:45,623 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 556 transitions. Word has length 256 [2022-11-16 12:36:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:45,624 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 556 transitions. [2022-11-16 12:36:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 556 transitions. [2022-11-16 12:36:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-16 12:36:45,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:45,627 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:45,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:45,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:36:45,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 59136804, now seen corresponding path program 2 times [2022-11-16 12:36:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:45,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764248888] [2022-11-16 12:36:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:45,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:45,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:45,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758752536] [2022-11-16 12:36:45,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:45,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:45,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:45,953 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:45,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:36:46,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:46,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:46,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:36:46,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-16 12:36:47,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764248888] [2022-11-16 12:36:47,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758752536] [2022-11-16 12:36:47,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758752536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:47,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:47,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:36:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166269490] [2022-11-16 12:36:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:47,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:36:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:36:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:36:47,064 INFO L87 Difference]: Start difference. First operand 387 states and 556 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:47,796 INFO L93 Difference]: Finished difference Result 679 states and 979 transitions. [2022-11-16 12:36:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:36:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 271 [2022-11-16 12:36:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:47,805 INFO L225 Difference]: With dead ends: 679 [2022-11-16 12:36:47,805 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 12:36:47,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:47,808 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 579 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:47,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 3030 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:36:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 12:36:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 384. [2022-11-16 12:36:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 239 states have (on average 1.2343096234309623) internal successors, (295), 243 states have internal predecessors, (295), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2022-11-16 12:36:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 550 transitions. [2022-11-16 12:36:47,840 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 550 transitions. Word has length 271 [2022-11-16 12:36:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:47,843 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 550 transitions. [2022-11-16 12:36:47,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 6 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-16 12:36:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 550 transitions. [2022-11-16 12:36:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-16 12:36:47,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:47,846 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:47,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:48,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:36:48,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1637948815, now seen corresponding path program 1 times [2022-11-16 12:36:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:48,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783059425] [2022-11-16 12:36:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:48,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:48,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858100326] [2022-11-16 12:36:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:48,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:48,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:48,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:36:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:36:49,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-11-16 12:36:49,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783059425] [2022-11-16 12:36:49,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858100326] [2022-11-16 12:36:49,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858100326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:49,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:49,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:36:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441120008] [2022-11-16 12:36:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:49,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:36:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:49,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:36:49,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:36:49,333 INFO L87 Difference]: Start difference. First operand 384 states and 550 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 6 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 12:36:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:49,844 INFO L93 Difference]: Finished difference Result 678 states and 977 transitions. [2022-11-16 12:36:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 6 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 302 [2022-11-16 12:36:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:49,849 INFO L225 Difference]: With dead ends: 678 [2022-11-16 12:36:49,850 INFO L226 Difference]: Without dead ends: 401 [2022-11-16 12:36:49,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:49,857 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 124 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:49,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 3735 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-16 12:36:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2022-11-16 12:36:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 245 states have (on average 1.2326530612244897) internal successors, (302), 249 states have internal predecessors, (302), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (144), 121 states have call predecessors, (144), 119 states have call successors, (144) [2022-11-16 12:36:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 567 transitions. [2022-11-16 12:36:49,889 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 567 transitions. Word has length 302 [2022-11-16 12:36:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:49,890 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 567 transitions. [2022-11-16 12:36:49,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 6 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-16 12:36:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 567 transitions. [2022-11-16 12:36:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-16 12:36:49,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:49,894 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:49,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:50,108 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 148801045, now seen corresponding path program 1 times [2022-11-16 12:36:50,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:50,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308841863] [2022-11-16 12:36:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:50,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:50,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784134936] [2022-11-16 12:36:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:50,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:36:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:51,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:36:51,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 214 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-16 12:36:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-11-16 12:36:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:51,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308841863] [2022-11-16 12:36:51,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:51,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784134936] [2022-11-16 12:36:51,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784134936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:51,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:51,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-16 12:36:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247605506] [2022-11-16 12:36:51,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:51,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:36:51,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:36:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:51,892 INFO L87 Difference]: Start difference. First operand 396 states and 567 transitions. Second operand has 18 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2022-11-16 12:36:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:52,669 INFO L93 Difference]: Finished difference Result 721 states and 1039 transitions. [2022-11-16 12:36:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:36:52,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) Word has length 278 [2022-11-16 12:36:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:52,675 INFO L225 Difference]: With dead ends: 721 [2022-11-16 12:36:52,675 INFO L226 Difference]: Without dead ends: 399 [2022-11-16 12:36:52,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 537 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:36:52,680 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 268 mSDsluCounter, 4744 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:52,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 5177 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:36:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-16 12:36:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 393. [2022-11-16 12:36:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 243 states have (on average 1.2345679012345678) internal successors, (300), 246 states have internal predecessors, (300), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (140), 121 states have call predecessors, (140), 119 states have call successors, (140) [2022-11-16 12:36:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 561 transitions. [2022-11-16 12:36:52,721 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 561 transitions. Word has length 278 [2022-11-16 12:36:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:52,722 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 561 transitions. [2022-11-16 12:36:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.0625) internal successors, (129), 14 states have internal predecessors, (129), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2022-11-16 12:36:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 561 transitions. [2022-11-16 12:36:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:36:52,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:52,727 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:52,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:52,939 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:52,940 INFO L85 PathProgramCache]: Analyzing trace with hash -910840167, now seen corresponding path program 1 times [2022-11-16 12:36:52,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529465415] [2022-11-16 12:36:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:53,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386759318] [2022-11-16 12:36:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:53,111 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:53,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:36:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:54,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 3884 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:36:54,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-16 12:36:54,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529465415] [2022-11-16 12:36:54,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386759318] [2022-11-16 12:36:54,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386759318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:54,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:54,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:36:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348103132] [2022-11-16 12:36:54,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:54,470 INFO L87 Difference]: Start difference. First operand 393 states and 561 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:36:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:55,013 INFO L93 Difference]: Finished difference Result 804 states and 1188 transitions. [2022-11-16 12:36:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:36:55,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 338 [2022-11-16 12:36:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:55,019 INFO L225 Difference]: With dead ends: 804 [2022-11-16 12:36:55,019 INFO L226 Difference]: Without dead ends: 447 [2022-11-16 12:36:55,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:55,024 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 23 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:55,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2191 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-16 12:36:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 405. [2022-11-16 12:36:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 258 states have internal predecessors, (315), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (140), 121 states have call predecessors, (140), 119 states have call successors, (140) [2022-11-16 12:36:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 576 transitions. [2022-11-16 12:36:55,068 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 576 transitions. Word has length 338 [2022-11-16 12:36:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:55,068 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 576 transitions. [2022-11-16 12:36:55,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:36:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 576 transitions. [2022-11-16 12:36:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:36:55,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:55,073 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:55,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:36:55,288 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1384721697, now seen corresponding path program 1 times [2022-11-16 12:36:55,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:55,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202163957] [2022-11-16 12:36:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:55,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:55,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530305314] [2022-11-16 12:36:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:55,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:55,420 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:36:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:56,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 3872 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:36:56,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-16 12:36:56,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202163957] [2022-11-16 12:36:56,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530305314] [2022-11-16 12:36:56,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530305314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:56,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:56,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:36:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448065322] [2022-11-16 12:36:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:56,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:56,757 INFO L87 Difference]: Start difference. First operand 405 states and 576 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:36:56,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:56,817 INFO L93 Difference]: Finished difference Result 786 states and 1144 transitions. [2022-11-16 12:36:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 338 [2022-11-16 12:36:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:56,822 INFO L225 Difference]: With dead ends: 786 [2022-11-16 12:36:56,822 INFO L226 Difference]: Without dead ends: 417 [2022-11-16 12:36:56,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:56,827 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 3 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:56,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1408 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-16 12:36:56,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 411. [2022-11-16 12:36:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 261 states have (on average 1.2298850574712643) internal successors, (321), 264 states have internal predecessors, (321), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (140), 121 states have call predecessors, (140), 119 states have call successors, (140) [2022-11-16 12:36:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 582 transitions. [2022-11-16 12:36:56,865 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 582 transitions. Word has length 338 [2022-11-16 12:36:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:56,865 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 582 transitions. [2022-11-16 12:36:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:36:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 582 transitions. [2022-11-16 12:36:56,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-16 12:36:56,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:56,870 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:56,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:36:57,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:57,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash 336276844, now seen corresponding path program 1 times [2022-11-16 12:36:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:57,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202837831] [2022-11-16 12:36:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:57,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:57,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996657024] [2022-11-16 12:36:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:57,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:57,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:57,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:36:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:58,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 3429 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:36:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-16 12:36:58,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:58,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:58,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202837831] [2022-11-16 12:36:58,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:58,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996657024] [2022-11-16 12:36:58,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996657024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:58,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:58,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:36:58,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199104314] [2022-11-16 12:36:58,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:58,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:36:58,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:36:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:36:58,384 INFO L87 Difference]: Start difference. First operand 411 states and 582 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2022-11-16 12:36:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:59,051 INFO L93 Difference]: Finished difference Result 781 states and 1113 transitions. [2022-11-16 12:36:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 293 [2022-11-16 12:36:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:59,058 INFO L225 Difference]: With dead ends: 781 [2022-11-16 12:36:59,059 INFO L226 Difference]: Without dead ends: 435 [2022-11-16 12:36:59,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:59,064 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 177 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:59,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 3602 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:36:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-16 12:36:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 411. [2022-11-16 12:36:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 261 states have (on average 1.2298850574712643) internal successors, (321), 264 states have internal predecessors, (321), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (138), 121 states have call predecessors, (138), 119 states have call successors, (138) [2022-11-16 12:36:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 580 transitions. [2022-11-16 12:36:59,114 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 580 transitions. Word has length 293 [2022-11-16 12:36:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 580 transitions. [2022-11-16 12:36:59,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2022-11-16 12:36:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 580 transitions. [2022-11-16 12:36:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-16 12:36:59,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:59,119 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:59,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:59,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:59,333 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 366436837, now seen corresponding path program 2 times [2022-11-16 12:36:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:59,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997075158] [2022-11-16 12:36:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:59,464 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:59,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406913167] [2022-11-16 12:36:59,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:59,466 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:59,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:37:00,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:37:00,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:00,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:37:00,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-16 12:37:00,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:00,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:00,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997075158] [2022-11-16 12:37:00,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:00,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406913167] [2022-11-16 12:37:00,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406913167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:00,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:00,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:37:00,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975464341] [2022-11-16 12:37:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:00,317 INFO L87 Difference]: Start difference. First operand 411 states and 580 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-16 12:37:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:00,411 INFO L93 Difference]: Finished difference Result 751 states and 1077 transitions. [2022-11-16 12:37:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:37:00,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) Word has length 308 [2022-11-16 12:37:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:00,416 INFO L225 Difference]: With dead ends: 751 [2022-11-16 12:37:00,417 INFO L226 Difference]: Without dead ends: 414 [2022-11-16 12:37:00,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:00,421 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 12 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:00,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1875 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-16 12:37:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 409. [2022-11-16 12:37:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 259 states have (on average 1.223938223938224) internal successors, (317), 261 states have internal predecessors, (317), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (138), 122 states have call predecessors, (138), 119 states have call successors, (138) [2022-11-16 12:37:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 576 transitions. [2022-11-16 12:37:00,456 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 576 transitions. Word has length 308 [2022-11-16 12:37:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:00,456 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 576 transitions. [2022-11-16 12:37:00,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-16 12:37:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 576 transitions. [2022-11-16 12:37:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-16 12:37:00,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:00,460 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:00,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-16 12:37:00,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-16 12:37:00,671 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:00,671 INFO L85 PathProgramCache]: Analyzing trace with hash 983622565, now seen corresponding path program 1 times [2022-11-16 12:37:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:00,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531574714] [2022-11-16 12:37:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:00,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:00,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110775713] [2022-11-16 12:37:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:00,777 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:00,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:37:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3580 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:37:01,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-16 12:37:01,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:01,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:01,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531574714] [2022-11-16 12:37:01,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:01,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110775713] [2022-11-16 12:37:01,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110775713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:01,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:01,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626730330] [2022-11-16 12:37:01,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:01,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:01,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:01,952 INFO L87 Difference]: Start difference. First operand 409 states and 576 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:37:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:02,008 INFO L93 Difference]: Finished difference Result 784 states and 1129 transitions. [2022-11-16 12:37:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:37:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 308 [2022-11-16 12:37:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:02,013 INFO L225 Difference]: With dead ends: 784 [2022-11-16 12:37:02,013 INFO L226 Difference]: Without dead ends: 411 [2022-11-16 12:37:02,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:02,018 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 3 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:02,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1408 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-16 12:37:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2022-11-16 12:37:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 259 states have (on average 1.2123552123552124) internal successors, (314), 261 states have internal predecessors, (314), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (138), 122 states have call predecessors, (138), 119 states have call successors, (138) [2022-11-16 12:37:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 573 transitions. [2022-11-16 12:37:02,053 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 573 transitions. Word has length 308 [2022-11-16 12:37:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:02,053 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 573 transitions. [2022-11-16 12:37:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-16 12:37:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 573 transitions. [2022-11-16 12:37:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:37:02,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:02,058 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:02,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:02,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:02,271 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:02,272 INFO L85 PathProgramCache]: Analyzing trace with hash -507859543, now seen corresponding path program 1 times [2022-11-16 12:37:02,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:02,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550834981] [2022-11-16 12:37:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:02,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:02,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:02,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336812485] [2022-11-16 12:37:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:02,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:02,416 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:02,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:37:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:03,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 3852 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:37:03,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-11-16 12:37:03,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:03,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550834981] [2022-11-16 12:37:03,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:03,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336812485] [2022-11-16 12:37:03,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336812485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:03,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:03,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:37:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786821688] [2022-11-16 12:37:03,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:37:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:37:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:03,776 INFO L87 Difference]: Start difference. First operand 409 states and 573 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-16 12:37:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:04,033 INFO L93 Difference]: Finished difference Result 764 states and 1085 transitions. [2022-11-16 12:37:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:37:04,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 338 [2022-11-16 12:37:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:04,039 INFO L225 Difference]: With dead ends: 764 [2022-11-16 12:37:04,039 INFO L226 Difference]: Without dead ends: 449 [2022-11-16 12:37:04,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:37:04,046 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 63 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:04,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2484 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-16 12:37:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 410. [2022-11-16 12:37:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 260 states have (on average 1.2115384615384615) internal successors, (315), 262 states have internal predecessors, (315), 121 states have call successors, (121), 25 states have call predecessors, (121), 27 states have return successors, (138), 122 states have call predecessors, (138), 119 states have call successors, (138) [2022-11-16 12:37:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 574 transitions. [2022-11-16 12:37:04,094 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 574 transitions. Word has length 338 [2022-11-16 12:37:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:04,094 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 574 transitions. [2022-11-16 12:37:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-16 12:37:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 574 transitions. [2022-11-16 12:37:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-16 12:37:04,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:04,099 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:04,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:04,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:04,313 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1226269797, now seen corresponding path program 1 times [2022-11-16 12:37:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833654515] [2022-11-16 12:37:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:04,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:04,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889073154] [2022-11-16 12:37:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:04,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:04,448 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:04,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:37:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:37:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:05,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 12:37:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-11-16 12:37:05,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:05,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833654515] [2022-11-16 12:37:05,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:05,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889073154] [2022-11-16 12:37:05,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889073154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:05,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:05,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:37:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888742006] [2022-11-16 12:37:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:05,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:37:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:37:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:37:05,996 INFO L87 Difference]: Start difference. First operand 410 states and 574 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-16 12:37:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:07,052 INFO L93 Difference]: Finished difference Result 835 states and 1205 transitions. [2022-11-16 12:37:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:07,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 332 [2022-11-16 12:37:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:07,056 INFO L225 Difference]: With dead ends: 835 [2022-11-16 12:37:07,056 INFO L226 Difference]: Without dead ends: 461 [2022-11-16 12:37:07,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:37:07,060 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 121 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:07,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 3757 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:37:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-16 12:37:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 421. [2022-11-16 12:37:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 270 states have (on average 1.2185185185185186) internal successors, (329), 271 states have internal predecessors, (329), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (151), 124 states have call predecessors, (151), 119 states have call successors, (151) [2022-11-16 12:37:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 601 transitions. [2022-11-16 12:37:07,095 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 601 transitions. Word has length 332 [2022-11-16 12:37:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:07,096 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 601 transitions. [2022-11-16 12:37:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-16 12:37:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 601 transitions. [2022-11-16 12:37:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 12:37:07,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:07,100 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:07,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:37:07,318 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2102406586, now seen corresponding path program 1 times [2022-11-16 12:37:07,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:07,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952979851] [2022-11-16 12:37:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:07,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845619910] [2022-11-16 12:37:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:07,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:07,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:07,412 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:07,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:37:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:08,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3647 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:37:08,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-11-16 12:37:08,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:08,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:08,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952979851] [2022-11-16 12:37:08,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:08,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845619910] [2022-11-16 12:37:08,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845619910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:08,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:08,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:37:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223073680] [2022-11-16 12:37:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:08,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:37:08,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:37:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:37:08,667 INFO L87 Difference]: Start difference. First operand 421 states and 601 transitions. Second operand has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-16 12:37:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:09,334 INFO L93 Difference]: Finished difference Result 762 states and 1092 transitions. [2022-11-16 12:37:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:37:09,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) Word has length 317 [2022-11-16 12:37:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:09,343 INFO L225 Difference]: With dead ends: 762 [2022-11-16 12:37:09,343 INFO L226 Difference]: Without dead ends: 444 [2022-11-16 12:37:09,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:37:09,396 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 196 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:09,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 3921 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:37:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-11-16 12:37:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 421. [2022-11-16 12:37:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 270 states have (on average 1.2185185185185186) internal successors, (329), 271 states have internal predecessors, (329), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (149), 124 states have call predecessors, (149), 119 states have call successors, (149) [2022-11-16 12:37:09,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 599 transitions. [2022-11-16 12:37:09,435 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 599 transitions. Word has length 317 [2022-11-16 12:37:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:09,436 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 599 transitions. [2022-11-16 12:37:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2022-11-16 12:37:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 599 transitions. [2022-11-16 12:37:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-16 12:37:09,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:09,440 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:09,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:09,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:09,653 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1092674013, now seen corresponding path program 1 times [2022-11-16 12:37:09,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203044242] [2022-11-16 12:37:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:09,767 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:09,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140633336] [2022-11-16 12:37:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:09,769 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:09,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:37:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:10,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:37:10,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2022-11-16 12:37:10,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203044242] [2022-11-16 12:37:10,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140633336] [2022-11-16 12:37:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140633336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:10,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:10,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:37:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034079756] [2022-11-16 12:37:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:10,905 INFO L87 Difference]: Start difference. First operand 421 states and 599 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:10,975 INFO L93 Difference]: Finished difference Result 826 states and 1205 transitions. [2022-11-16 12:37:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:37:10,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2022-11-16 12:37:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:10,981 INFO L225 Difference]: With dead ends: 826 [2022-11-16 12:37:10,981 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 12:37:10,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:10,984 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 9 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1921 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 [2022-11-16 12:37:10,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1921 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 12:37:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 429. [2022-11-16 12:37:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 278 states have (on average 1.20863309352518) internal successors, (336), 279 states have internal predecessors, (336), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (149), 124 states have call predecessors, (149), 119 states have call successors, (149) [2022-11-16 12:37:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 606 transitions. [2022-11-16 12:37:11,021 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 606 transitions. Word has length 332 [2022-11-16 12:37:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 606 transitions. [2022-11-16 12:37:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 606 transitions. [2022-11-16 12:37:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-16 12:37:11,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:11,026 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:11,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:37:11,240 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -903523869, now seen corresponding path program 1 times [2022-11-16 12:37:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:11,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575654656] [2022-11-16 12:37:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:11,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:11,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119454326] [2022-11-16 12:37:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:11,339 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:11,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:37:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3767 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:37:12,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-11-16 12:37:12,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575654656] [2022-11-16 12:37:12,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119454326] [2022-11-16 12:37:12,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119454326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:12,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:12,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071307197] [2022-11-16 12:37:12,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:12,487 INFO L87 Difference]: Start difference. First operand 429 states and 606 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:12,554 INFO L93 Difference]: Finished difference Result 822 states and 1207 transitions. [2022-11-16 12:37:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:37:12,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2022-11-16 12:37:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:12,560 INFO L225 Difference]: With dead ends: 822 [2022-11-16 12:37:12,560 INFO L226 Difference]: Without dead ends: 429 [2022-11-16 12:37:12,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:12,566 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 7 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:12,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1414 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-16 12:37:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-11-16 12:37:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 278 states have (on average 1.2050359712230216) internal successors, (335), 279 states have internal predecessors, (335), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (149), 124 states have call predecessors, (149), 119 states have call successors, (149) [2022-11-16 12:37:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 605 transitions. [2022-11-16 12:37:12,615 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 605 transitions. Word has length 332 [2022-11-16 12:37:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 605 transitions. [2022-11-16 12:37:12,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 605 transitions. [2022-11-16 12:37:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:37:12,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:12,621 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:12,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:37:12,834 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 740978973, now seen corresponding path program 1 times [2022-11-16 12:37:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:12,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025558104] [2022-11-16 12:37:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:12,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:12,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568870081] [2022-11-16 12:37:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:12,971 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:12,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:37:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:14,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:37:14,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-16 12:37:14,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:14,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025558104] [2022-11-16 12:37:14,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:14,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568870081] [2022-11-16 12:37:14,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568870081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:14,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:14,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:37:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109429421] [2022-11-16 12:37:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:14,116 INFO L87 Difference]: Start difference. First operand 429 states and 605 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:14,451 INFO L93 Difference]: Finished difference Result 822 states and 1205 transitions. [2022-11-16 12:37:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:37:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 338 [2022-11-16 12:37:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:14,457 INFO L225 Difference]: With dead ends: 822 [2022-11-16 12:37:14,457 INFO L226 Difference]: Without dead ends: 429 [2022-11-16 12:37:14,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:37:14,461 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 10 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:14,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1816 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:37:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-16 12:37:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-11-16 12:37:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 278 states have (on average 1.2014388489208634) internal successors, (334), 279 states have internal predecessors, (334), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (149), 124 states have call predecessors, (149), 119 states have call successors, (149) [2022-11-16 12:37:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 604 transitions. [2022-11-16 12:37:14,494 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 604 transitions. Word has length 338 [2022-11-16 12:37:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:14,495 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 604 transitions. [2022-11-16 12:37:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 12:37:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 604 transitions. [2022-11-16 12:37:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 12:37:14,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:14,498 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:14,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:37:14,712 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash 295285343, now seen corresponding path program 1 times [2022-11-16 12:37:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640581507] [2022-11-16 12:37:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:14,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:14,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909368168] [2022-11-16 12:37:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:14,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:14,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:14,816 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:14,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:37:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:16,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-16 12:37:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:17,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-16 12:37:17,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-16 12:37:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-16 12:37:17,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:17,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:17,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640581507] [2022-11-16 12:37:17,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909368168] [2022-11-16 12:37:17,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909368168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:17,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:17,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:37:17,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588216715] [2022-11-16 12:37:17,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:17,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:37:17,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:37:17,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:37:17,049 INFO L87 Difference]: Start difference. First operand 429 states and 604 transitions. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-16 12:37:18,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:18,238 INFO L93 Difference]: Finished difference Result 843 states and 1209 transitions. [2022-11-16 12:37:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 338 [2022-11-16 12:37:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:18,243 INFO L225 Difference]: With dead ends: 843 [2022-11-16 12:37:18,244 INFO L226 Difference]: Without dead ends: 476 [2022-11-16 12:37:18,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:37:18,247 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 110 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:18,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 4228 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 579 Invalid, 0 Unknown, 76 Unchecked, 0.8s Time] [2022-11-16 12:37:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-16 12:37:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 442. [2022-11-16 12:37:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 287 states have (on average 1.1951219512195121) internal successors, (343), 288 states have internal predecessors, (343), 123 states have call successors, (123), 26 states have call predecessors, (123), 30 states have return successors, (161), 127 states have call predecessors, (161), 121 states have call successors, (161) [2022-11-16 12:37:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 627 transitions. [2022-11-16 12:37:18,287 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 627 transitions. Word has length 338 [2022-11-16 12:37:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:18,288 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 627 transitions. [2022-11-16 12:37:18,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-16 12:37:18,288 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 627 transitions. [2022-11-16 12:37:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-16 12:37:18,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:18,292 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:37:18,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:18,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:37:18,508 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1917201394, now seen corresponding path program 1 times [2022-11-16 12:37:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:18,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314829328] [2022-11-16 12:37:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:18,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:18,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061075081] [2022-11-16 12:37:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:18,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:18,597 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:18,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:37:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:19,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 3799 conjuncts, 277 conjunts are in the unsatisfiable core [2022-11-16 12:37:19,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:20,381 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5286 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5286) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5285 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5285) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:37:20,422 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_5286 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5286))) (exists ((v_ArrVal_5285 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5285) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-16 12:37:20,516 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:37:20,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:37:20,535 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:37:20,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:37:20,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:20,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:20,843 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5288 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5288) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5287 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5287))))) is different from true [2022-11-16 12:37:21,555 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5290 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290))) (exists ((v_ArrVal_5289 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:37:21,579 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5289 (Array Int Int)) (v_ArrVal_5290 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290)))) is different from true [2022-11-16 12:37:21,649 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5288 (Array Int Int)) (v_ArrVal_5287 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5289 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| Int) (v_ArrVal_5290 (Array Int Int))) (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| v_ArrVal_5287)) (.cse0 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| v_ArrVal_5288))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290) |c_#memory_$Pointer$.base|) (= (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:37:21,945 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:37:21,946 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 2 case distinctions, treesize of input 36 treesize of output 51 [2022-11-16 12:37:21,988 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:37:21,993 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 2 case distinctions, treesize of input 36 treesize of output 51 [2022-11-16 12:37:22,057 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 24 treesize of output 20 [2022-11-16 12:37:22,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:22,119 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 7 treesize of output 3 [2022-11-16 12:37:22,240 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5291 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5291) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5292 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5292) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-16 12:37:22,524 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5293 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293))) (exists ((v_ArrVal_5294 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294))))) is different from true [2022-11-16 12:37:22,544 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5293 (Array Int Int)) (v_ArrVal_5294 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293)))) is different from true [2022-11-16 12:37:22,613 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5288 (Array Int Int)) (v_ArrVal_5287 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| Int) (v_ArrVal_5293 (Array Int Int)) (v_ArrVal_5294 (Array Int Int))) (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| v_ArrVal_5288)) (.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| v_ArrVal_5287))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293))))) is different from true [2022-11-16 12:37:22,903 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:37:22,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2022-11-16 12:37:22,945 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:37:22,945 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 2 case distinctions, treesize of input 36 treesize of output 51 [2022-11-16 12:37:23,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:23,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:23,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:23,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:37:23,558 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5297 Int) (v_ArrVal_5296 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5297))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5296)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:37:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 337 proven. 22 refuted. 0 times theorem prover too weak. 296 trivial. 178 not checked. [2022-11-16 12:37:24,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:25,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:25,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314829328] [2022-11-16 12:37:25,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:25,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061075081] [2022-11-16 12:37:25,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061075081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:37:25,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:37:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-11-16 12:37:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81523450] [2022-11-16 12:37:25,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:37:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:37:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1500, Unknown=54, NotChecked=968, Total=2652 [2022-11-16 12:37:25,268 INFO L87 Difference]: Start difference. First operand 442 states and 627 transitions. Second operand has 48 states, 46 states have (on average 3.9782608695652173) internal successors, (183), 44 states have internal predecessors, (183), 17 states have call successors, (37), 5 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:37:26,025 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5293 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293))) (exists ((v_ArrVal_5294 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5290 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290))) (exists ((v_ArrVal_5289 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|)))) (exists ((v_ArrVal_5286 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5286) |c_#memory_$Pointer$.offset|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5297 Int) (v_ArrVal_5296 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5297))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5296)) |c_#memory_$Pointer$.offset|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5288 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5288) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5287 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5287))))) (exists ((v_ArrVal_5285 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5285) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5291 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5291) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5292 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5292) |c_#memory_$Pointer$.offset|))))) is different from true [2022-11-16 12:37:26,150 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_5286 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5286))) (exists ((v_ArrVal_5285 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_5285) |c_#memory_$Pointer$.base|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5293 (Array Int Int)) (v_ArrVal_5294 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5289 (Array Int Int)) (v_ArrVal_5290 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290))))) is different from true [2022-11-16 12:37:26,628 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (exists ((v_ArrVal_5288 (Array Int Int)) (v_ArrVal_5287 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| Int) (v_ArrVal_5293 (Array Int Int)) (v_ArrVal_5294 (Array Int Int))) (let ((.cse2 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| v_ArrVal_5288)) (.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_59| v_ArrVal_5287))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5294) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5293))))) (exists ((v_ArrVal_5288 (Array Int Int)) (v_ArrVal_5287 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5289 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| Int) (v_ArrVal_5290 (Array Int Int))) (let ((.cse4 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| v_ArrVal_5287)) (.cse3 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_58| v_ArrVal_5288))) (and (= (select (select .cse3 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (select (select .cse4 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse4 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5290) |c_#memory_$Pointer$.base|) (= (store .cse3 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5289) |c_#memory_$Pointer$.offset|)))))) is different from true [2022-11-16 12:37:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:31,724 INFO L93 Difference]: Finished difference Result 1075 states and 1646 transitions. [2022-11-16 12:37:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:37:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 3.9782608695652173) internal successors, (183), 44 states have internal predecessors, (183), 17 states have call successors, (37), 5 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 17 states have call successors, (38) Word has length 340 [2022-11-16 12:37:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:31,733 INFO L225 Difference]: With dead ends: 1075 [2022-11-16 12:37:31,733 INFO L226 Difference]: Without dead ends: 755 [2022-11-16 12:37:31,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=259, Invalid=3391, Unknown=66, NotChecked=1834, Total=5550 [2022-11-16 12:37:31,739 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 351 mSDsluCounter, 7996 mSDsCounter, 0 mSdLazyCounter, 5797 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 16486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 5797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10422 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:31,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 8509 Invalid, 16486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [267 Valid, 5797 Invalid, 0 Unknown, 10422 Unchecked, 5.4s Time] [2022-11-16 12:37:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-16 12:37:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 448. [2022-11-16 12:37:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 290 states have (on average 1.193103448275862) internal successors, (346), 293 states have internal predecessors, (346), 125 states have call successors, (125), 26 states have call predecessors, (125), 31 states have return successors, (177), 128 states have call predecessors, (177), 123 states have call successors, (177) [2022-11-16 12:37:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 648 transitions. [2022-11-16 12:37:31,826 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 648 transitions. Word has length 340 [2022-11-16 12:37:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:31,827 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 648 transitions. [2022-11-16 12:37:31,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 3.9782608695652173) internal successors, (183), 44 states have internal predecessors, (183), 17 states have call successors, (37), 5 states have call predecessors, (37), 17 states have return successors, (38), 19 states have call predecessors, (38), 17 states have call successors, (38) [2022-11-16 12:37:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 648 transitions. [2022-11-16 12:37:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-16 12:37:31,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:31,833 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:37:31,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:37:32,049 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:32,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1116848652, now seen corresponding path program 1 times [2022-11-16 12:37:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:32,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983724734] [2022-11-16 12:37:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:32,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:32,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:32,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120862904] [2022-11-16 12:37:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:32,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:32,193 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:32,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:37:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:33,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 3794 conjuncts, 197 conjunts are in the unsatisfiable core [2022-11-16 12:37:33,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:33,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:33,864 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5574 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5574) |c_#memory_int|)) is different from true [2022-11-16 12:37:33,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:34,000 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5575 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5575) |c_#memory_int|)) is different from true [2022-11-16 12:37:34,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:34,112 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:37:34,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:37:34,234 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576))) is different from true [2022-11-16 12:37:34,376 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5577) |c_#memory_int|)) is different from true [2022-11-16 12:37:34,413 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| Int) (v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| v_ArrVal_5577) |c_#memory_int|)) is different from true [2022-11-16 12:37:34,441 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| Int) (v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| v_ArrVal_5577) |c_#memory_int|)) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short863#1|)) is different from true [2022-11-16 12:37:34,473 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:37:34,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-16 12:37:34,774 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5578 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5578))) is different from true [2022-11-16 12:37:34,940 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5579) |c_#memory_int|)) is different from true [2022-11-16 12:37:34,979 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| Int) (v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= |c_#memory_int| (store (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| v_ArrVal_5579))) is different from true [2022-11-16 12:37:35,054 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 12:37:35,055 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 2 case distinctions, treesize of input 21 treesize of output 36 [2022-11-16 12:37:35,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-16 12:37:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 333 proven. 75 refuted. 0 times theorem prover too weak. 227 trivial. 198 not checked. [2022-11-16 12:37:35,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2022-11-16 12:37:37,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:37,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983724734] [2022-11-16 12:37:37,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:37,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120862904] [2022-11-16 12:37:37,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120862904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:37,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:37,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 13] total 49 [2022-11-16 12:37:37,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642090912] [2022-11-16 12:37:37,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 12:37:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 12:37:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1453, Unknown=16, NotChecked=756, Total=2352 [2022-11-16 12:37:37,503 INFO L87 Difference]: Start difference. First operand 448 states and 648 transitions. Second operand has 49 states, 44 states have (on average 5.704545454545454) internal successors, (251), 40 states have internal predecessors, (251), 22 states have call successors, (61), 9 states have call predecessors, (61), 16 states have return successors, (60), 24 states have call predecessors, (60), 20 states have call successors, (60) [2022-11-16 12:37:38,438 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)) (exists ((v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5578 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5578))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5575 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5575) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5579) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5577) |c_#memory_int|))) is different from true [2022-11-16 12:37:38,465 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)) (exists ((v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5578 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5578)))) is different from true [2022-11-16 12:37:38,468 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5575 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5575) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5579) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5577) |c_#memory_int|))) is different from true [2022-11-16 12:37:38,832 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5578 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5578))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5575 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5575) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5579) |c_#memory_int|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5577) |c_#memory_int|))) is different from true [2022-11-16 12:37:38,835 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5578 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5578)))) is different from true [2022-11-16 12:37:39,002 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0)) (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| Int) (v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5577 (Array Int Int))) (= (store (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_72| v_ArrVal_5577) |c_#memory_int|)) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short863#1|) (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| Int) (v_ArrVal_5576 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5579 (Array Int Int))) (= |c_#memory_int| (store (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5576) |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_73| v_ArrVal_5579)))) is different from true [2022-11-16 12:37:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:43,746 INFO L93 Difference]: Finished difference Result 996 states and 1553 transitions. [2022-11-16 12:37:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 12:37:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 5.704545454545454) internal successors, (251), 40 states have internal predecessors, (251), 22 states have call successors, (61), 9 states have call predecessors, (61), 16 states have return successors, (60), 24 states have call predecessors, (60), 20 states have call successors, (60) Word has length 340 [2022-11-16 12:37:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:43,753 INFO L225 Difference]: With dead ends: 996 [2022-11-16 12:37:43,754 INFO L226 Difference]: Without dead ends: 670 [2022-11-16 12:37:43,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 632 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=312, Invalid=3865, Unknown=43, NotChecked=2100, Total=6320 [2022-11-16 12:37:43,759 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 474 mSDsluCounter, 7498 mSDsCounter, 0 mSdLazyCounter, 5980 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 7978 SdHoareTripleChecker+Invalid, 16744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 5980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10291 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:43,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 7978 Invalid, 16744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [473 Valid, 5980 Invalid, 0 Unknown, 10291 Unchecked, 4.9s Time] [2022-11-16 12:37:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-16 12:37:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 474. [2022-11-16 12:37:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 311 states have (on average 1.1961414790996785) internal successors, (372), 315 states have internal predecessors, (372), 125 states have call successors, (125), 28 states have call predecessors, (125), 36 states have return successors, (193), 130 states have call predecessors, (193), 123 states have call successors, (193) [2022-11-16 12:37:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 690 transitions. [2022-11-16 12:37:43,821 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 690 transitions. Word has length 340 [2022-11-16 12:37:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:43,822 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 690 transitions. [2022-11-16 12:37:43,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 5.704545454545454) internal successors, (251), 40 states have internal predecessors, (251), 22 states have call successors, (61), 9 states have call predecessors, (61), 16 states have return successors, (60), 24 states have call predecessors, (60), 20 states have call successors, (60) [2022-11-16 12:37:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 690 transitions. [2022-11-16 12:37:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-16 12:37:43,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:43,826 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:37:43,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:44,043 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1834633986, now seen corresponding path program 1 times [2022-11-16 12:37:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108285280] [2022-11-16 12:37:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:44,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:44,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402722969] [2022-11-16 12:37:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:44,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:44,198 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:44,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:37:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:45,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 3809 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-16 12:37:45,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:45,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:45,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:45,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:46,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:46,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:46,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:46,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:46,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:46,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:46,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:46,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:37:46,614 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5961 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5961) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5962 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5962) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:37:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 377 proven. 37 refuted. 3 times theorem prover too weak. 430 trivial. 0 not checked. [2022-11-16 12:37:47,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:48,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:48,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108285280] [2022-11-16 12:37:48,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:48,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402722969] [2022-11-16 12:37:48,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402722969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:37:48,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:37:48,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-16 12:37:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947727332] [2022-11-16 12:37:48,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:48,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:37:48,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:37:48,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1072, Unknown=10, NotChecked=66, Total=1260 [2022-11-16 12:37:48,747 INFO L87 Difference]: Start difference. First operand 474 states and 690 transitions. Second operand has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 27 states have internal predecessors, (140), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-16 12:37:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:53,562 INFO L93 Difference]: Finished difference Result 1223 states and 1962 transitions. [2022-11-16 12:37:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:37:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 27 states have internal predecessors, (140), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) Word has length 344 [2022-11-16 12:37:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:53,571 INFO L225 Difference]: With dead ends: 1223 [2022-11-16 12:37:53,571 INFO L226 Difference]: Without dead ends: 794 [2022-11-16 12:37:53,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 533 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=206, Invalid=1938, Unknown=22, NotChecked=90, Total=2256 [2022-11-16 12:37:53,577 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 285 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 9041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5501 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:53,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 5443 Invalid, 9041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 3325 Invalid, 0 Unknown, 5501 Unchecked, 3.3s Time] [2022-11-16 12:37:53,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-16 12:37:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 505. [2022-11-16 12:37:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 335 states have (on average 1.1970149253731344) internal successors, (401), 341 states have internal predecessors, (401), 128 states have call successors, (128), 29 states have call predecessors, (128), 40 states have return successors, (229), 134 states have call predecessors, (229), 126 states have call successors, (229) [2022-11-16 12:37:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 758 transitions. [2022-11-16 12:37:53,663 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 758 transitions. Word has length 344 [2022-11-16 12:37:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:53,664 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 758 transitions. [2022-11-16 12:37:53,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.827586206896552) internal successors, (140), 27 states have internal predecessors, (140), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 10 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-16 12:37:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 758 transitions. [2022-11-16 12:37:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-16 12:37:53,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:53,669 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:53,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:53,886 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2019972311, now seen corresponding path program 1 times [2022-11-16 12:37:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151431480] [2022-11-16 12:37:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:53,995 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:53,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610882180] [2022-11-16 12:37:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:53,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:53,997 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:54,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:37:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 3868 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:37:55,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-16 12:37:55,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:55,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151431480] [2022-11-16 12:37:55,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:55,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610882180] [2022-11-16 12:37:55,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610882180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:55,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:55,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:37:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156597128] [2022-11-16 12:37:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:55,445 INFO L87 Difference]: Start difference. First operand 505 states and 758 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:37:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:55,855 INFO L93 Difference]: Finished difference Result 961 states and 1507 transitions. [2022-11-16 12:37:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:37:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 354 [2022-11-16 12:37:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:55,861 INFO L225 Difference]: With dead ends: 961 [2022-11-16 12:37:55,862 INFO L226 Difference]: Without dead ends: 505 [2022-11-16 12:37:55,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:55,867 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 13 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:55,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1802 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:37:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-16 12:37:55,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-11-16 12:37:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 335 states have (on average 1.191044776119403) internal successors, (399), 341 states have internal predecessors, (399), 128 states have call successors, (128), 29 states have call predecessors, (128), 40 states have return successors, (229), 134 states have call predecessors, (229), 126 states have call successors, (229) [2022-11-16 12:37:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 756 transitions. [2022-11-16 12:37:55,937 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 756 transitions. Word has length 354 [2022-11-16 12:37:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:55,938 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 756 transitions. [2022-11-16 12:37:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-16 12:37:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 756 transitions. [2022-11-16 12:37:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-16 12:37:55,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:55,943 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:55,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-16 12:37:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:56,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1629321513, now seen corresponding path program 2 times [2022-11-16 12:37:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:56,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991009021] [2022-11-16 12:37:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:56,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058336134] [2022-11-16 12:37:56,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:37:56,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:56,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:56,256 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:56,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 12:37:58,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:37:58,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:58,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 3848 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 12:37:58,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:59,061 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6542 Int) (v_ArrVal_6541 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6542))) (= |c_#memory_$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_6541))))) is different from true [2022-11-16 12:38:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 211 proven. 3 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-16 12:38:10,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:12,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:12,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991009021] [2022-11-16 12:38:12,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:38:12,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058336134] [2022-11-16 12:38:12,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058336134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:12,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:12,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-16 12:38:12,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21870767] [2022-11-16 12:38:12,463 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:12,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:38:12,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:38:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=423, Unknown=29, NotChecked=42, Total=552 [2022-11-16 12:38:12,465 INFO L87 Difference]: Start difference. First operand 505 states and 756 transitions. Second operand has 23 states, 22 states have (on average 5.0) internal successors, (110), 20 states have internal predecessors, (110), 10 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (30), 10 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-16 12:38:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:24,258 INFO L93 Difference]: Finished difference Result 1006 states and 1560 transitions. [2022-11-16 12:38:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:38:24,258 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.0) internal successors, (110), 20 states have internal predecessors, (110), 10 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (30), 10 states have call predecessors, (30), 9 states have call successors, (30) Word has length 350 [2022-11-16 12:38:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:24,264 INFO L225 Difference]: With dead ends: 1006 [2022-11-16 12:38:24,264 INFO L226 Difference]: Without dead ends: 637 [2022-11-16 12:38:24,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 333 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=128, Invalid=1037, Unknown=29, NotChecked=66, Total=1260 [2022-11-16 12:38:24,267 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 282 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 6150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2348 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 5146 Invalid, 6150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [222 Valid, 3580 Invalid, 0 Unknown, 2348 Unchecked, 3.1s Time] [2022-11-16 12:38:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-16 12:38:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 514. [2022-11-16 12:38:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 341 states have (on average 1.187683284457478) internal successors, (405), 346 states have internal predecessors, (405), 130 states have call successors, (130), 31 states have call predecessors, (130), 41 states have return successors, (233), 136 states have call predecessors, (233), 128 states have call successors, (233) [2022-11-16 12:38:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 768 transitions. [2022-11-16 12:38:24,336 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 768 transitions. Word has length 350 [2022-11-16 12:38:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:24,337 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 768 transitions. [2022-11-16 12:38:24,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.0) internal successors, (110), 20 states have internal predecessors, (110), 10 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (30), 10 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-16 12:38:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 768 transitions. [2022-11-16 12:38:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-16 12:38:24,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:24,342 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:24,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:24,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 12:38:24,560 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash -244043287, now seen corresponding path program 3 times [2022-11-16 12:38:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:24,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438556348] [2022-11-16 12:38:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:24,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:38:24,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185137024] [2022-11-16 12:38:24,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:38:24,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:24,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:24,654 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:24,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 12:38:26,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:38:26,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:26,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-16 12:38:26,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:27,134 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (exists ((v_ArrVal_6840 Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_6840)))) (exists ((v_ArrVal_6839 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_6839)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_6842 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_6842)) |c_#memory_int|)))) is different from true [2022-11-16 12:38:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 209 proven. 5 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-16 12:38:42,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438556348] [2022-11-16 12:38:47,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:38:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185137024] [2022-11-16 12:38:47,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185137024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:47,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:47,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-16 12:38:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094672169] [2022-11-16 12:38:47,859 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:47,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:38:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:38:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=758, Unknown=11, NotChecked=56, Total=930 [2022-11-16 12:38:47,861 INFO L87 Difference]: Start difference. First operand 514 states and 768 transitions. Second operand has 21 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-16 12:38:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:55,847 INFO L93 Difference]: Finished difference Result 1047 states and 1642 transitions. [2022-11-16 12:38:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:38:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) Word has length 350 [2022-11-16 12:38:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:55,854 INFO L225 Difference]: With dead ends: 1047 [2022-11-16 12:38:55,855 INFO L226 Difference]: Without dead ends: 634 [2022-11-16 12:38:55,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=171, Invalid=1225, Unknown=14, NotChecked=72, Total=1482 [2022-11-16 12:38:55,859 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 173 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2489 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2209 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 610 Invalid, 0 Unknown, 2489 Unchecked, 1.2s Time] [2022-11-16 12:38:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-16 12:38:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 521. [2022-11-16 12:38:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 345 states have (on average 1.1855072463768115) internal successors, (409), 350 states have internal predecessors, (409), 132 states have call successors, (132), 32 states have call predecessors, (132), 42 states have return successors, (238), 138 states have call predecessors, (238), 130 states have call successors, (238) [2022-11-16 12:38:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 779 transitions. [2022-11-16 12:38:55,939 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 779 transitions. Word has length 350 [2022-11-16 12:38:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:55,940 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 779 transitions. [2022-11-16 12:38:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.5) internal successors, (110), 18 states have internal predecessors, (110), 7 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (30), 7 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-16 12:38:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 779 transitions. [2022-11-16 12:38:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-16 12:38:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:55,945 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:55,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:56,160 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1978183258, now seen corresponding path program 1 times [2022-11-16 12:38:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811995423] [2022-11-16 12:38:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:38:56,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288311096] [2022-11-16 12:38:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,275 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 12:38:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:58,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 3862 conjuncts, 135 conjunts are in the unsatisfiable core [2022-11-16 12:38:58,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:58,383 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7142 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7142) |c_#memory_int|)) is different from true [2022-11-16 12:38:58,440 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:38:58,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-16 12:38:58,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-16 12:38:58,783 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7143 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7143)) |c_#memory_int|)) is different from true [2022-11-16 12:38:58,989 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_7143 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7143)) |c_#memory_int|))) is different from true [2022-11-16 12:38:59,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:38:59,269 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 12 treesize of output 6 [2022-11-16 12:39:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 191 proven. 132 refuted. 74 times theorem prover too weak. 403 trivial. 62 not checked. [2022-11-16 12:39:04,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:04,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811995423] [2022-11-16 12:39:04,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:39:04,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288311096] [2022-11-16 12:39:04,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288311096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:04,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:04,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-11-16 12:39:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492673372] [2022-11-16 12:39:04,548 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:04,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:39:04,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:39:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=12, NotChecked=186, Total=1190 [2022-11-16 12:39:04,550 INFO L87 Difference]: Start difference. First operand 521 states and 779 transitions. Second operand has 30 states, 29 states have (on average 5.689655172413793) internal successors, (165), 26 states have internal predecessors, (165), 16 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (38), 15 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-16 12:39:05,252 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7142 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7142) |c_#memory_int|)) (exists ((v_ArrVal_7143 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7143)) |c_#memory_int|))) is different from true [2022-11-16 12:39:05,357 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7142 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7142) |c_#memory_int|)) (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_7143 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7143)) |c_#memory_int|))) is different from true [2022-11-16 12:39:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:12,694 INFO L93 Difference]: Finished difference Result 1280 states and 2050 transitions. [2022-11-16 12:39:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:39:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.689655172413793) internal successors, (165), 26 states have internal predecessors, (165), 16 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (38), 15 states have call predecessors, (38), 15 states have call successors, (38) Word has length 360 [2022-11-16 12:39:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:12,703 INFO L225 Difference]: With dead ends: 1280 [2022-11-16 12:39:12,703 INFO L226 Difference]: Without dead ends: 904 [2022-11-16 12:39:12,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=218, Invalid=2044, Unknown=14, NotChecked=480, Total=2756 [2022-11-16 12:39:12,707 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 403 mSDsluCounter, 6757 mSDsCounter, 0 mSdLazyCounter, 7292 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 7314 SdHoareTripleChecker+Invalid, 11350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 7292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3768 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:12,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 7314 Invalid, 11350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 7292 Invalid, 0 Unknown, 3768 Unchecked, 7.2s Time] [2022-11-16 12:39:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-16 12:39:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 551. [2022-11-16 12:39:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 369 states have (on average 1.1869918699186992) internal successors, (438), 375 states have internal predecessors, (438), 134 states have call successors, (134), 34 states have call predecessors, (134), 46 states have return successors, (243), 141 states have call predecessors, (243), 132 states have call successors, (243) [2022-11-16 12:39:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 815 transitions. [2022-11-16 12:39:12,792 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 815 transitions. Word has length 360 [2022-11-16 12:39:12,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:12,793 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 815 transitions. [2022-11-16 12:39:12,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.689655172413793) internal successors, (165), 26 states have internal predecessors, (165), 16 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (38), 15 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-16 12:39:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 815 transitions. [2022-11-16 12:39:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-16 12:39:12,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:12,797 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:12,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-16 12:39:13,017 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -744663554, now seen corresponding path program 1 times [2022-11-16 12:39:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:13,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303812564] [2022-11-16 12:39:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:13,102 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:39:13,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823485820] [2022-11-16 12:39:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:13,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:13,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:13,104 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:13,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 12:39:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:14,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 3695 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:39:14,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-11-16 12:39:14,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303812564] [2022-11-16 12:39:14,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:39:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823485820] [2022-11-16 12:39:14,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823485820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:14,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:14,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:39:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705374848] [2022-11-16 12:39:14,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:39:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:39:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:14,537 INFO L87 Difference]: Start difference. First operand 551 states and 815 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (36), 5 states have call predecessors, (36), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-16 12:39:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:15,203 INFO L93 Difference]: Finished difference Result 1018 states and 1537 transitions. [2022-11-16 12:39:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (36), 5 states have call predecessors, (36), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 344 [2022-11-16 12:39:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:15,209 INFO L225 Difference]: With dead ends: 1018 [2022-11-16 12:39:15,209 INFO L226 Difference]: Without dead ends: 568 [2022-11-16 12:39:15,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:39:15,212 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 136 mSDsluCounter, 3661 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:15,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4106 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:39:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-16 12:39:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2022-11-16 12:39:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 376 states have (on average 1.1861702127659575) internal successors, (446), 382 states have internal predecessors, (446), 143 states have call successors, (143), 35 states have call predecessors, (143), 47 states have return successors, (264), 150 states have call predecessors, (264), 141 states have call successors, (264) [2022-11-16 12:39:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 853 transitions. [2022-11-16 12:39:15,282 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 853 transitions. Word has length 344 [2022-11-16 12:39:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:15,283 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 853 transitions. [2022-11-16 12:39:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (36), 5 states have call predecessors, (36), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-16 12:39:15,283 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 853 transitions. [2022-11-16 12:39:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-16 12:39:15,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:15,287 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:15,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-16 12:39:15,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 12:39:15,500 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -757765981, now seen corresponding path program 4 times [2022-11-16 12:39:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120975701] [2022-11-16 12:39:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:15,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:39:15,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762396394] [2022-11-16 12:39:15,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:39:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:15,595 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:15,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-16 12:39:17,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:39:17,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:17,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 3853 conjuncts, 147 conjunts are in the unsatisfiable core [2022-11-16 12:39:17,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:17,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:39:17,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:39:50,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:39:50,737 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 25 treesize of output 24 [2022-11-16 12:39:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 45 [2022-11-16 12:39:59,522 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:39:59,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:39:59,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:39:59,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 12:39:59,970 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7657 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7657) |c_#memory_int|)) is different from true [2022-11-16 12:40:00,332 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7658 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7658)) |c_#memory_int|)) is different from true [2022-11-16 12:40:00,343 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7658 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7658)))) is different from true [2022-11-16 12:40:00,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:40:00,663 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-11-16 12:40:00,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 109 [2022-11-16 12:40:00,691 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:40:00,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:40:00,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:40:00,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:40:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:40:00,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:40:00,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:40:00,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2022-11-16 12:40:00,880 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 42 treesize of output 33 [2022-11-16 12:40:00,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-16 12:40:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:40:01,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:40:01,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2022-11-16 12:40:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 410 proven. 40 refuted. 4 times theorem prover too weak. 384 trivial. 12 not checked. [2022-11-16 12:40:01,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:06,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:06,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120975701] [2022-11-16 12:40:06,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:40:06,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762396394] [2022-11-16 12:40:06,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762396394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:06,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:40:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2022-11-16 12:40:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182822525] [2022-11-16 12:40:06,792 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:40:06,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-16 12:40:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-16 12:40:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2302, Unknown=46, NotChecked=300, Total=2862 [2022-11-16 12:40:06,795 INFO L87 Difference]: Start difference. First operand 568 states and 853 transitions. Second operand has 47 states, 40 states have (on average 3.75) internal successors, (150), 38 states have internal predecessors, (150), 17 states have call successors, (36), 11 states have call predecessors, (36), 16 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-16 12:40:46,806 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7658 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7658)))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_7657 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7657) |c_#memory_int|))))) is different from true [2022-11-16 12:40:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:54,915 INFO L93 Difference]: Finished difference Result 1562 states and 2567 transitions. [2022-11-16 12:40:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-16 12:40:54,916 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 3.75) internal successors, (150), 38 states have internal predecessors, (150), 17 states have call successors, (36), 11 states have call predecessors, (36), 16 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) Word has length 352 [2022-11-16 12:40:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:54,926 INFO L225 Difference]: With dead ends: 1562 [2022-11-16 12:40:54,926 INFO L226 Difference]: Without dead ends: 1048 [2022-11-16 12:40:54,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 519 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 89.3s TimeCoverageRelationStatistics Valid=370, Invalid=4373, Unknown=103, NotChecked=556, Total=5402 [2022-11-16 12:40:54,931 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 347 mSDsluCounter, 7486 mSDsCounter, 0 mSdLazyCounter, 6475 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 8111 SdHoareTripleChecker+Invalid, 14504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 6475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7787 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:54,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 8111 Invalid, 14504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [242 Valid, 6475 Invalid, 0 Unknown, 7787 Unchecked, 6.1s Time] [2022-11-16 12:40:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-16 12:40:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 657. [2022-11-16 12:40:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 444 states have (on average 1.1824324324324325) internal successors, (525), 455 states have internal predecessors, (525), 151 states have call successors, (151), 41 states have call predecessors, (151), 60 states have return successors, (325), 160 states have call predecessors, (325), 149 states have call successors, (325) [2022-11-16 12:40:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1001 transitions. [2022-11-16 12:40:55,033 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1001 transitions. Word has length 352 [2022-11-16 12:40:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:55,033 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1001 transitions. [2022-11-16 12:40:55,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 3.75) internal successors, (150), 38 states have internal predecessors, (150), 17 states have call successors, (36), 11 states have call predecessors, (36), 16 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-16 12:40:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1001 transitions. [2022-11-16 12:40:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-16 12:40:55,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:55,038 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:55,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:55,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:55,254 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:55,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1099979642, now seen corresponding path program 1 times [2022-11-16 12:40:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:55,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98901596] [2022-11-16 12:40:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:55,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:40:55,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319711063] [2022-11-16 12:40:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:55,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:55,354 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-16 12:40:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3835 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 12:40:56,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 270 proven. 1 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2022-11-16 12:40:56,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2022-11-16 12:40:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98901596] [2022-11-16 12:40:58,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:40:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319711063] [2022-11-16 12:40:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319711063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:40:58,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:40:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-11-16 12:40:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191088340] [2022-11-16 12:40:58,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:40:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:40:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:40:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:40:58,291 INFO L87 Difference]: Start difference. First operand 657 states and 1001 transitions. Second operand has 21 states, 18 states have (on average 7.277777777777778) internal successors, (131), 14 states have internal predecessors, (131), 5 states have call successors, (34), 3 states have call predecessors, (34), 7 states have return successors, (34), 8 states have call predecessors, (34), 4 states have call successors, (34) [2022-11-16 12:40:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:59,024 INFO L93 Difference]: Finished difference Result 1190 states and 1839 transitions. [2022-11-16 12:40:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:40:59,025 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.277777777777778) internal successors, (131), 14 states have internal predecessors, (131), 5 states have call successors, (34), 3 states have call predecessors, (34), 7 states have return successors, (34), 8 states have call predecessors, (34), 4 states have call successors, (34) Word has length 372 [2022-11-16 12:40:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:59,030 INFO L225 Difference]: With dead ends: 1190 [2022-11-16 12:40:59,030 INFO L226 Difference]: Without dead ends: 667 [2022-11-16 12:40:59,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 719 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:40:59,033 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 17 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6835 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:59,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6835 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:40:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-16 12:40:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 657. [2022-11-16 12:40:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 444 states have (on average 1.1824324324324325) internal successors, (525), 455 states have internal predecessors, (525), 151 states have call successors, (151), 41 states have call predecessors, (151), 60 states have return successors, (319), 160 states have call predecessors, (319), 149 states have call successors, (319) [2022-11-16 12:40:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 995 transitions. [2022-11-16 12:40:59,187 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 995 transitions. Word has length 372 [2022-11-16 12:40:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:59,188 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 995 transitions. [2022-11-16 12:40:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.277777777777778) internal successors, (131), 14 states have internal predecessors, (131), 5 states have call successors, (34), 3 states have call predecessors, (34), 7 states have return successors, (34), 8 states have call predecessors, (34), 4 states have call successors, (34) [2022-11-16 12:40:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 995 transitions. [2022-11-16 12:40:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 12:40:59,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:59,192 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:59,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:59,406 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1693313771, now seen corresponding path program 2 times [2022-11-16 12:40:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:59,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263387097] [2022-11-16 12:40:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:59,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:40:59,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056341115] [2022-11-16 12:40:59,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:40:59,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:59,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:59,505 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-16 12:41:01,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:41:01,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:01,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 12:41:01,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-16 12:41:01,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263387097] [2022-11-16 12:41:01,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:41:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056341115] [2022-11-16 12:41:01,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056341115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:01,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:01,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:41:01,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788916684] [2022-11-16 12:41:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:41:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:41:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:41:01,265 INFO L87 Difference]: Start difference. First operand 657 states and 995 transitions. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-16 12:41:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:01,559 INFO L93 Difference]: Finished difference Result 1243 states and 1920 transitions. [2022-11-16 12:41:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:41:01,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) Word has length 366 [2022-11-16 12:41:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:01,564 INFO L225 Difference]: With dead ends: 1243 [2022-11-16 12:41:01,564 INFO L226 Difference]: Without dead ends: 672 [2022-11-16 12:41:01,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:41:01,567 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 36 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:01,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 5181 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:41:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-16 12:41:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 648. [2022-11-16 12:41:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 436 states have (on average 1.1788990825688073) internal successors, (514), 446 states have internal predecessors, (514), 151 states have call successors, (151), 41 states have call predecessors, (151), 59 states have return successors, (308), 160 states have call predecessors, (308), 149 states have call successors, (308) [2022-11-16 12:41:01,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 973 transitions. [2022-11-16 12:41:01,649 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 973 transitions. Word has length 366 [2022-11-16 12:41:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:01,650 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 973 transitions. [2022-11-16 12:41:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (32), 6 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-16 12:41:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 973 transitions. [2022-11-16 12:41:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-16 12:41:01,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:01,654 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:01,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-16 12:41:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 12:41:01,867 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1201772826, now seen corresponding path program 2 times [2022-11-16 12:41:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103942489] [2022-11-16 12:41:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:01,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:41:01,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268630737] [2022-11-16 12:41:01,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:41:01,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:01,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:01,951 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:01,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 12:41:03,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:41:03,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 3852 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:41:03,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:03,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:41:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 402 proven. 10 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-11-16 12:41:03,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 9 proven. 125 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-16 12:41:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:05,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103942489] [2022-11-16 12:41:05,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:41:05,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268630737] [2022-11-16 12:41:05,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268630737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:05,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:05,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 32 [2022-11-16 12:41:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062977980] [2022-11-16 12:41:05,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:05,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:41:05,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:41:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:41:05,608 INFO L87 Difference]: Start difference. First operand 648 states and 973 transitions. Second operand has 32 states, 27 states have (on average 6.888888888888889) internal successors, (186), 23 states have internal predecessors, (186), 9 states have call successors, (52), 3 states have call predecessors, (52), 10 states have return successors, (53), 13 states have call predecessors, (53), 8 states have call successors, (53) [2022-11-16 12:41:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:07,445 INFO L93 Difference]: Finished difference Result 1278 states and 1945 transitions. [2022-11-16 12:41:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:41:07,446 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 6.888888888888889) internal successors, (186), 23 states have internal predecessors, (186), 9 states have call successors, (52), 3 states have call predecessors, (52), 10 states have return successors, (53), 13 states have call predecessors, (53), 8 states have call successors, (53) Word has length 356 [2022-11-16 12:41:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:07,452 INFO L225 Difference]: With dead ends: 1278 [2022-11-16 12:41:07,452 INFO L226 Difference]: Without dead ends: 716 [2022-11-16 12:41:07,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 676 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:41:07,457 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 35 mSDsluCounter, 11201 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 11683 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:07,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 11683 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 12:41:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-16 12:41:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 681. [2022-11-16 12:41:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 466 states have (on average 1.1824034334763949) internal successors, (551), 474 states have internal predecessors, (551), 153 states have call successors, (153), 41 states have call predecessors, (153), 60 states have return successors, (323), 165 states have call predecessors, (323), 151 states have call successors, (323) [2022-11-16 12:41:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1027 transitions. [2022-11-16 12:41:07,549 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1027 transitions. Word has length 356 [2022-11-16 12:41:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:07,549 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1027 transitions. [2022-11-16 12:41:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 6.888888888888889) internal successors, (186), 23 states have internal predecessors, (186), 9 states have call successors, (52), 3 states have call predecessors, (52), 10 states have return successors, (53), 13 states have call predecessors, (53), 8 states have call successors, (53) [2022-11-16 12:41:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1027 transitions. [2022-11-16 12:41:07,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-16 12:41:07,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:07,554 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:07,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-16 12:41:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 12:41:07,769 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash 908164920, now seen corresponding path program 1 times [2022-11-16 12:41:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157625353] [2022-11-16 12:41:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:07,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:41:07,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257035312] [2022-11-16 12:41:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:07,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:07,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:07,857 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:07,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-16 12:41:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:09,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3867 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 12:41:09,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 459 proven. 14 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-16 12:41:09,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-16 12:41:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:10,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157625353] [2022-11-16 12:41:10,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:41:10,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257035312] [2022-11-16 12:41:10,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257035312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:10,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:10,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2022-11-16 12:41:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005096708] [2022-11-16 12:41:10,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:41:10,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:41:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:41:10,771 INFO L87 Difference]: Start difference. First operand 681 states and 1027 transitions. Second operand has 27 states, 24 states have (on average 7.291666666666667) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-16 12:41:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:11,795 INFO L93 Difference]: Finished difference Result 1211 states and 1814 transitions. [2022-11-16 12:41:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:41:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 7.291666666666667) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) Word has length 372 [2022-11-16 12:41:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:11,801 INFO L225 Difference]: With dead ends: 1211 [2022-11-16 12:41:11,802 INFO L226 Difference]: Without dead ends: 709 [2022-11-16 12:41:11,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 713 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:41:11,805 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 35 mSDsluCounter, 8604 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9092 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:11,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 9092 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:41:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-16 12:41:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 681. [2022-11-16 12:41:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 466 states have (on average 1.1824034334763949) internal successors, (551), 474 states have internal predecessors, (551), 153 states have call successors, (153), 41 states have call predecessors, (153), 60 states have return successors, (322), 165 states have call predecessors, (322), 151 states have call successors, (322) [2022-11-16 12:41:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1026 transitions. [2022-11-16 12:41:11,896 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1026 transitions. Word has length 372 [2022-11-16 12:41:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:11,897 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1026 transitions. [2022-11-16 12:41:11,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 7.291666666666667) internal successors, (175), 18 states have internal predecessors, (175), 7 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-16 12:41:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1026 transitions. [2022-11-16 12:41:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-16 12:41:11,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:11,902 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:11,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:12,115 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1713987864, now seen corresponding path program 2 times [2022-11-16 12:41:12,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:12,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27235422] [2022-11-16 12:41:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:12,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:41:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754170487] [2022-11-16 12:41:12,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:41:12,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:12,206 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:12,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 12:41:14,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:41:14,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:14,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-16 12:41:14,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 527 proven. 11 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-16 12:41:14,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:14,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-16 12:41:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 73 proven. 88 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-11-16 12:41:16,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:16,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27235422] [2022-11-16 12:41:16,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:41:16,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754170487] [2022-11-16 12:41:16,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754170487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:16,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:16,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 40 [2022-11-16 12:41:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274768707] [2022-11-16 12:41:16,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 12:41:16,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 12:41:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1462, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:41:16,440 INFO L87 Difference]: Start difference. First operand 681 states and 1026 transitions. Second operand has 40 states, 35 states have (on average 5.914285714285715) internal successors, (207), 29 states have internal predecessors, (207), 13 states have call successors, (58), 5 states have call predecessors, (58), 10 states have return successors, (56), 16 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-16 12:41:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:18,794 INFO L93 Difference]: Finished difference Result 1268 states and 1925 transitions. [2022-11-16 12:41:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:41:18,795 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 5.914285714285715) internal successors, (207), 29 states have internal predecessors, (207), 13 states have call successors, (58), 5 states have call predecessors, (58), 10 states have return successors, (56), 16 states have call predecessors, (56), 11 states have call successors, (56) Word has length 356 [2022-11-16 12:41:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:18,799 INFO L225 Difference]: With dead ends: 1268 [2022-11-16 12:41:18,799 INFO L226 Difference]: Without dead ends: 711 [2022-11-16 12:41:18,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 669 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=2113, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 12:41:18,803 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 101 mSDsluCounter, 13445 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 13921 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:18,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 13921 Invalid, 2187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1882 Invalid, 0 Unknown, 257 Unchecked, 1.9s Time] [2022-11-16 12:41:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-16 12:41:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 681. [2022-11-16 12:41:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 466 states have (on average 1.1824034334763949) internal successors, (551), 474 states have internal predecessors, (551), 153 states have call successors, (153), 41 states have call predecessors, (153), 60 states have return successors, (321), 165 states have call predecessors, (321), 151 states have call successors, (321) [2022-11-16 12:41:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1025 transitions. [2022-11-16 12:41:18,894 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1025 transitions. Word has length 356 [2022-11-16 12:41:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:18,895 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1025 transitions. [2022-11-16 12:41:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 5.914285714285715) internal successors, (207), 29 states have internal predecessors, (207), 13 states have call successors, (58), 5 states have call predecessors, (58), 10 states have return successors, (56), 16 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-16 12:41:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1025 transitions. [2022-11-16 12:41:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-11-16 12:41:18,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:18,899 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:18,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-16 12:41:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-16 12:41:19,112 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 519416051, now seen corresponding path program 3 times [2022-11-16 12:41:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232573824] [2022-11-16 12:41:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:19,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:41:19,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096001875] [2022-11-16 12:41:19,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:41:19,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:19,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:19,245 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:19,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da60d4a3-9bfd-45ca-a69a-6da00734f3cd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process