./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro --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 d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- 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-8393723 [2022-11-18 21:02:01,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:02:01,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:02:01,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:02:01,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:02:01,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:02:01,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:02:01,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:02:01,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:02:01,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:02:01,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:02:01,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:02:01,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:02:01,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:02:01,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:02:01,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:02:01,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:02:01,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:02:01,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:02:01,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:02:01,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:02:01,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:02:01,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:02:01,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:02:01,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:02:01,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:02:01,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:02:01,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:02:01,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:02:01,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:02:01,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:02:01,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:02:01,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:02:01,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:02:01,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:02:01,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:02:01,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:02:01,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:02:01,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:02:01,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:02:01,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:02:01,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 21:02:01,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:02:01,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:02:01,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:02:01,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:02:01,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:02:01,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:02:01,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:02:01,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:02:01,906 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:02:01,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:02:01,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:02:01,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:02:01,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:02:01,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:02:01,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:02:01,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:02:01,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:02:01,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:02:01,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:02:01,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:02:01,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:02:01,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:01,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:02:01,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:02:01,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:02:01,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:02:01,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:02:01,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:02:01,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:02:01,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:02:01,913 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_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2022-11-18 21:02:02,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:02:02,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:02:02,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:02:02,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:02:02,326 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:02:02,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2022-11-18 21:02:02,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/data/fb21319a5/45f607da51e14e3f8d313939c630be96/FLAGf9c169352 [2022-11-18 21:02:03,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:02:03,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2022-11-18 21:02:03,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/data/fb21319a5/45f607da51e14e3f8d313939c630be96/FLAGf9c169352 [2022-11-18 21:02:03,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/data/fb21319a5/45f607da51e14e3f8d313939c630be96 [2022-11-18 21:02:03,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:02:03,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:02:03,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:03,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:02:03,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:02:03,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:03" (1/1) ... [2022-11-18 21:02:03,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f43ac73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:03, skipping insertion in model container [2022-11-18 21:02:03,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:03" (1/1) ... [2022-11-18 21:02:03,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:02:04,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:02:04,366 WARN L234 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_2f8d1821-24fc-4f48-aa39-b3710f70a475/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2022-11-18 21:02:04,377 WARN L234 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_2f8d1821-24fc-4f48-aa39-b3710f70a475/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2022-11-18 21:02:05,560 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,562 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,565 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,566 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,570 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,611 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,612 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,614 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,615 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,618 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,619 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,620 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:05,621 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,125 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 21:02:06,126 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 21:02:06,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 21:02:06,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 21:02:06,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 21:02:06,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 21:02:06,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 21:02:06,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 21:02:06,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 21:02:06,135 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 21:02:06,326 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 21:02:06,419 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,446 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,527 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,528 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,528 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,529 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,529 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,530 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,531 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,531 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,532 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,532 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,533 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,533 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,534 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,537 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,538 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,538 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,538 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,543 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,543 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,552 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,553 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,554 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:06,601 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:02:06,618 WARN L234 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_2f8d1821-24fc-4f48-aa39-b3710f70a475/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2022-11-18 21:02:06,619 WARN L234 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_2f8d1821-24fc-4f48-aa39-b3710f70a475/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2022-11-18 21:02:06,672 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,683 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,683 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,684 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,685 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,692 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,699 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,700 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,701 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,702 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,704 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,705 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,705 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 21:02:06,779 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 21:02:06,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 21:02:06,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 21:02:06,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 21:02:06,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 21:02:06,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 21:02:06,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 21:02:06,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 21:02:06,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 21:02:06,842 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 21:02:06,867 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,873 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,972 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,974 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,975 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,975 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,976 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,976 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,977 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,978 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,979 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,979 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,979 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,980 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,981 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,982 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,983 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,984 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,985 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,988 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,990 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:06,999 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:07,000 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:07,000 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 21:02:07,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:07,271 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:02:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07 WrapperNode [2022-11-18 21:02:07,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:07,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:07,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:02:07,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:02:07,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,499 INFO L138 Inliner]: procedures = 697, calls = 1878, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1162 [2022-11-18 21:02:07,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:07,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:02:07,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:02:07,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:02:07,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:02:07,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:02:07,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:02:07,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:02:07,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (1/1) ... [2022-11-18 21:02:07,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:02:07,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:07,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:02:07,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:02:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-18 21:02:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-18 21:02:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2022-11-18 21:02:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2022-11-18 21:02:07,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-18 21:02:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-18 21:02:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:02:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-18 21:02:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-18 21:02:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-18 21:02:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-18 21:02:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 21:02:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 21:02:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-18 21:02:07,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-18 21:02:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-18 21:02:07,800 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-18 21:02:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:02:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 21:02:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 21:02:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 21:02:07,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 21:02:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:02:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:02:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 21:02:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-18 21:02:07,808 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-18 21:02:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 21:02:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 21:02:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:02:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:02:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 21:02:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 21:02:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-18 21:02:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-18 21:02:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 21:02:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 21:02:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-18 21:02:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-18 21:02:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 21:02:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 21:02:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-18 21:02:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-18 21:02:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 21:02:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 21:02:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 21:02:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 21:02:07,818 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 21:02:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 21:02:07,819 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-18 21:02:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-18 21:02:07,819 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-18 21:02:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-18 21:02:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:02:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-18 21:02:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-18 21:02:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 21:02:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 21:02:07,820 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-18 21:02:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-18 21:02:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 21:02:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 21:02:07,821 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-18 21:02:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-18 21:02:07,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-18 21:02:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-18 21:02:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:02:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-18 21:02:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-18 21:02:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-18 21:02:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-18 21:02:07,823 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-18 21:02:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-18 21:02:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 21:02:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 21:02:07,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:02:08,475 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:02:08,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:02:10,396 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:02:10,422 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:02:10,422 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 21:02:10,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:10 BoogieIcfgContainer [2022-11-18 21:02:10,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:02:10,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:02:10,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:02:10,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:02:10,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:02:03" (1/3) ... [2022-11-18 21:02:10,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d431e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:10, skipping insertion in model container [2022-11-18 21:02:10,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:07" (2/3) ... [2022-11-18 21:02:10,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d431e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:02:10, skipping insertion in model container [2022-11-18 21:02:10,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:10" (3/3) ... [2022-11-18 21:02:10,443 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2022-11-18 21:02:10,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:02:10,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 21:02:10,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:10,611 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;@71e533e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:10,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 21:02:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 307 states have (on average 1.247557003257329) internal successors, (383), 310 states have internal predecessors, (383), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2022-11-18 21:02:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 21:02:10,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:10,639 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:10,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2064741935, now seen corresponding path program 1 times [2022-11-18 21:02:10,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:10,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286066718] [2022-11-18 21:02:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:10,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:02:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:02:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 21:02:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:02:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:02:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 21:02:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:02:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 21:02:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 21:02:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 21:02:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:02:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 21:02:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 21:02:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 21:02:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 21:02:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 21:02:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 21:02:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:02:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 21:02:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 21:02:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-18 21:02:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-18 21:02:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-18 21:02:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286066718] [2022-11-18 21:02:12,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286066718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:12,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:12,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288131073] [2022-11-18 21:02:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:12,180 INFO L87 Difference]: Start difference. First operand has 537 states, 307 states have (on average 1.247557003257329) internal successors, (383), 310 states have internal predecessors, (383), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 21:02:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:15,007 INFO L93 Difference]: Finished difference Result 1219 states and 2024 transitions. [2022-11-18 21:02:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:15,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2022-11-18 21:02:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:15,052 INFO L225 Difference]: With dead ends: 1219 [2022-11-18 21:02:15,052 INFO L226 Difference]: Without dead ends: 688 [2022-11-18 21:02:15,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:15,071 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 337 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:15,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1173 Invalid, 1307 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 21:02:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-18 21:02:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 530. [2022-11-18 21:02:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 301 states have (on average 1.2292358803986712) internal successors, (370), 303 states have internal predecessors, (370), 196 states have call successors, (196), 32 states have call predecessors, (196), 31 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2022-11-18 21:02:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 760 transitions. [2022-11-18 21:02:15,292 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 760 transitions. Word has length 167 [2022-11-18 21:02:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:15,293 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 760 transitions. [2022-11-18 21:02:15,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-18 21:02:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 760 transitions. [2022-11-18 21:02:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 21:02:15,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:15,313 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:15,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:02:15,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:15,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash 374832211, now seen corresponding path program 1 times [2022-11-18 21:02:15,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:15,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938931166] [2022-11-18 21:02:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:02:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:02:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 21:02:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:02:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:02:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 21:02:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:02:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 21:02:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 21:02:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 21:02:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:02:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 21:02:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 21:02:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 21:02:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 21:02:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 21:02:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 21:02:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:02:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-18 21:02:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 21:02:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-18 21:02:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-18 21:02:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-18 21:02:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:16,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938931166] [2022-11-18 21:02:16,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938931166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839980197] [2022-11-18 21:02:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:16,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:16,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:16,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:02:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:17,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-18 21:02:17,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839980197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:17,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:17,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-18 21:02:17,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345569610] [2022-11-18 21:02:17,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:17,691 INFO L87 Difference]: Start difference. First operand 530 states and 760 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 21:02:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:18,309 INFO L93 Difference]: Finished difference Result 1029 states and 1488 transitions. [2022-11-18 21:02:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-11-18 21:02:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:18,315 INFO L225 Difference]: With dead ends: 1029 [2022-11-18 21:02:18,316 INFO L226 Difference]: Without dead ends: 532 [2022-11-18 21:02:18,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:18,321 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 786 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2651 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:02:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-18 21:02:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-11-18 21:02:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 302 states have (on average 1.228476821192053) internal successors, (371), 305 states have internal predecessors, (371), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2022-11-18 21:02:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 771 transitions. [2022-11-18 21:02:18,384 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 771 transitions. Word has length 167 [2022-11-18 21:02:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:18,385 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 771 transitions. [2022-11-18 21:02:18,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 21:02:18,386 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 771 transitions. [2022-11-18 21:02:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-18 21:02:18,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:18,389 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:18,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:18,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:18,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1919571972, now seen corresponding path program 1 times [2022-11-18 21:02:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:18,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005822291] [2022-11-18 21:02:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:02:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:02:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 21:02:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:02:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 21:02:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 21:02:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:02:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 21:02:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 21:02:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 21:02:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 21:02:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 21:02:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 21:02:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:02:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 21:02:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:02:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 21:02:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-18 21:02:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 21:02:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 21:02:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-18 21:02:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 21:02:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-18 21:02:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005822291] [2022-11-18 21:02:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005822291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:19,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182986554] [2022-11-18 21:02:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:19,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:19,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:19,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:20,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:02:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-18 21:02:20,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:20,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182986554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:20,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:20,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-18 21:02:20,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631951304] [2022-11-18 21:02:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:20,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:20,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:02:20,990 INFO L87 Difference]: Start difference. First operand 532 states and 771 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 21:02:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:22,080 INFO L93 Difference]: Finished difference Result 1052 states and 1568 transitions. [2022-11-18 21:02:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:02:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 175 [2022-11-18 21:02:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:22,088 INFO L225 Difference]: With dead ends: 1052 [2022-11-18 21:02:22,089 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 21:02:22,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:02:22,096 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 827 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:22,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3765 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:02:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 21:02:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 551. [2022-11-18 21:02:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-18 21:02:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-18 21:02:22,160 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 175 [2022-11-18 21:02:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:22,164 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-18 21:02:22,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-18 21:02:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-18 21:02:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-18 21:02:22,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:22,169 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:22,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:22,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1259751837, now seen corresponding path program 1 times [2022-11-18 21:02:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111656565] [2022-11-18 21:02:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:22,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:22,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:22,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74451387] [2022-11-18 21:02:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:22,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:22,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:02:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:23,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-18 21:02:23,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:23,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:23,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111656565] [2022-11-18 21:02:23,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:23,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74451387] [2022-11-18 21:02:23,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74451387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:23,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:23,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:02:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497810386] [2022-11-18 21:02:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:23,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:02:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:02:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:02:23,478 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-18 21:02:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:24,258 INFO L93 Difference]: Finished difference Result 1077 states and 1650 transitions. [2022-11-18 21:02:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:02:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 190 [2022-11-18 21:02:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:24,265 INFO L225 Difference]: With dead ends: 1077 [2022-11-18 21:02:24,266 INFO L226 Difference]: Without dead ends: 559 [2022-11-18 21:02:24,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:24,275 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 810 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:24,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 3281 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:02:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-18 21:02:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 551. [2022-11-18 21:02:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-18 21:02:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-18 21:02:24,343 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 190 [2022-11-18 21:02:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:24,346 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-18 21:02:24,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-18 21:02:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-18 21:02:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-18 21:02:24,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:24,352 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:24,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:24,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:24,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1496894689, now seen corresponding path program 1 times [2022-11-18 21:02:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:24,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488771580] [2022-11-18 21:02:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:24,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:24,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525879906] [2022-11-18 21:02:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:24,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:24,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:02:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:25,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-18 21:02:25,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:25,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488771580] [2022-11-18 21:02:25,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:25,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525879906] [2022-11-18 21:02:25,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525879906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:25,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:25,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:02:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652940612] [2022-11-18 21:02:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:25,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:02:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:02:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:02:25,765 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-18 21:02:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:27,063 INFO L93 Difference]: Finished difference Result 1087 states and 1657 transitions. [2022-11-18 21:02:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:02:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 206 [2022-11-18 21:02:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:27,071 INFO L225 Difference]: With dead ends: 1087 [2022-11-18 21:02:27,071 INFO L226 Difference]: Without dead ends: 569 [2022-11-18 21:02:27,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:02:27,076 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 860 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:27,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4344 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 21:02:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-18 21:02:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 551. [2022-11-18 21:02:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 318 states have (on average 1.2358490566037736) internal successors, (393), 321 states have internal predecessors, (393), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-18 21:02:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-11-18 21:02:27,129 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 206 [2022-11-18 21:02:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:27,130 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-11-18 21:02:27,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-18 21:02:27,131 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-11-18 21:02:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-18 21:02:27,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:27,137 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:27,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:27,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:27,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:27,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1731548032, now seen corresponding path program 2 times [2022-11-18 21:02:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:27,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788236726] [2022-11-18 21:02:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:27,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:27,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413730844] [2022-11-18 21:02:27,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:27,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:27,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:02:28,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:28,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:28,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:28,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-18 21:02:28,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788236726] [2022-11-18 21:02:28,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:28,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413730844] [2022-11-18 21:02:28,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413730844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:28,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:28,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:02:28,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951930184] [2022-11-18 21:02:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:02:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:02:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:02:28,659 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 21:02:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:29,363 INFO L93 Difference]: Finished difference Result 1063 states and 1610 transitions. [2022-11-18 21:02:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:29,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 221 [2022-11-18 21:02:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:29,370 INFO L225 Difference]: With dead ends: 1063 [2022-11-18 21:02:29,370 INFO L226 Difference]: Without dead ends: 553 [2022-11-18 21:02:29,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:02:29,375 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 838 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:29,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 3278 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:02:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-18 21:02:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-11-18 21:02:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 319 states have (on average 1.2351097178683386) internal successors, (394), 323 states have internal predecessors, (394), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2022-11-18 21:02:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 838 transitions. [2022-11-18 21:02:29,428 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 838 transitions. Word has length 221 [2022-11-18 21:02:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:29,429 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 838 transitions. [2022-11-18 21:02:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.0) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-18 21:02:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 838 transitions. [2022-11-18 21:02:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-18 21:02:29,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:29,434 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:29,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:29,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:29,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 704505135, now seen corresponding path program 1 times [2022-11-18 21:02:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:29,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466348703] [2022-11-18 21:02:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:29,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472881295] [2022-11-18 21:02:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:29,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:29,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:29,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:02:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:30,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:30,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-18 21:02:30,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466348703] [2022-11-18 21:02:30,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:30,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472881295] [2022-11-18 21:02:30,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472881295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:02:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696110455] [2022-11-18 21:02:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:30,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:02:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:30,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:02:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:02:30,892 INFO L87 Difference]: Start difference. First operand 553 states and 838 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-18 21:02:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:32,005 INFO L93 Difference]: Finished difference Result 1081 states and 1648 transitions. [2022-11-18 21:02:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:32,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 229 [2022-11-18 21:02:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:32,012 INFO L225 Difference]: With dead ends: 1081 [2022-11-18 21:02:32,012 INFO L226 Difference]: Without dead ends: 569 [2022-11-18 21:02:32,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:32,018 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 849 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:32,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4436 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:02:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-18 21:02:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2022-11-18 21:02:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2022-11-18 21:02:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 858 transitions. [2022-11-18 21:02:32,071 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 858 transitions. Word has length 229 [2022-11-18 21:02:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:32,072 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 858 transitions. [2022-11-18 21:02:32,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-18 21:02:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 858 transitions. [2022-11-18 21:02:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-18 21:02:32,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:32,078 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 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, 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] [2022-11-18 21:02:32,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:32,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:02:32,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1333093850, now seen corresponding path program 2 times [2022-11-18 21:02:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:32,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391796154] [2022-11-18 21:02:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:32,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:32,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683957452] [2022-11-18 21:02:32,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:32,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:32,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:32,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:32,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:02:33,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:33,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:33,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:33,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-18 21:02:33,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:33,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391796154] [2022-11-18 21:02:33,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683957452] [2022-11-18 21:02:33,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683957452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:33,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:02:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000771367] [2022-11-18 21:02:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:33,406 INFO L87 Difference]: Start difference. First operand 567 states and 858 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-18 21:02:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:34,268 INFO L93 Difference]: Finished difference Result 1101 states and 1688 transitions. [2022-11-18 21:02:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:34,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 244 [2022-11-18 21:02:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:34,275 INFO L225 Difference]: With dead ends: 1101 [2022-11-18 21:02:34,275 INFO L226 Difference]: Without dead ends: 575 [2022-11-18 21:02:34,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:02:34,280 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 862 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:34,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3899 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:02:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-18 21:02:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 567. [2022-11-18 21:02:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (247), 199 states have call predecessors, (247), 197 states have call successors, (247) [2022-11-18 21:02:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 858 transitions. [2022-11-18 21:02:34,330 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 858 transitions. Word has length 244 [2022-11-18 21:02:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:34,331 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 858 transitions. [2022-11-18 21:02:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-11-18 21:02:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 858 transitions. [2022-11-18 21:02:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-18 21:02:34,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:34,337 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:34,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:34,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2083883891, now seen corresponding path program 3 times [2022-11-18 21:02:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143327623] [2022-11-18 21:02:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:34,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:34,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372216400] [2022-11-18 21:02:34,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:02:34,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:34,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:34,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:34,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:02:35,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 21:02:35,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:35,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:35,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-18 21:02:35,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:35,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143327623] [2022-11-18 21:02:35,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:35,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372216400] [2022-11-18 21:02:35,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372216400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:35,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:35,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:02:35,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898521100] [2022-11-18 21:02:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:35,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:35,971 INFO L87 Difference]: Start difference. First operand 567 states and 858 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 21:02:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:36,493 INFO L93 Difference]: Finished difference Result 1076 states and 1642 transitions. [2022-11-18 21:02:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 275 [2022-11-18 21:02:36,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:36,507 INFO L225 Difference]: With dead ends: 1076 [2022-11-18 21:02:36,507 INFO L226 Difference]: Without dead ends: 567 [2022-11-18 21:02:36,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:02:36,512 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:36,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3447 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:02:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-18 21:02:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-11-18 21:02:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 332 states have (on average 1.2409638554216869) internal successors, (412), 335 states have internal predecessors, (412), 199 states have call successors, (199), 32 states have call predecessors, (199), 34 states have return successors, (246), 199 states have call predecessors, (246), 197 states have call successors, (246) [2022-11-18 21:02:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 857 transitions. [2022-11-18 21:02:36,558 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 857 transitions. Word has length 275 [2022-11-18 21:02:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:36,559 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 857 transitions. [2022-11-18 21:02:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-18 21:02:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 857 transitions. [2022-11-18 21:02:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-18 21:02:36,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:36,565 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:36,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:36,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:36,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:36,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash 638478680, now seen corresponding path program 4 times [2022-11-18 21:02:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535389867] [2022-11-18 21:02:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:36,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881313878] [2022-11-18 21:02:36,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:02:36,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:36,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:02:37,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:02:37,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:37,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:02:37,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-18 21:02:37,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:37,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:37,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535389867] [2022-11-18 21:02:37,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:37,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881313878] [2022-11-18 21:02:37,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881313878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:37,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:37,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:02:37,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14951531] [2022-11-18 21:02:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:37,648 INFO L87 Difference]: Start difference. First operand 567 states and 857 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:02:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:38,722 INFO L93 Difference]: Finished difference Result 1220 states and 1863 transitions. [2022-11-18 21:02:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 290 [2022-11-18 21:02:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:38,732 INFO L225 Difference]: With dead ends: 1220 [2022-11-18 21:02:38,732 INFO L226 Difference]: Without dead ends: 706 [2022-11-18 21:02:38,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:02:38,738 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 159 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:38,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 5264 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:02:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-18 21:02:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 664. [2022-11-18 21:02:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 398 states have (on average 1.2663316582914572) internal successors, (504), 403 states have internal predecessors, (504), 228 states have call successors, (228), 33 states have call predecessors, (228), 36 states have return successors, (289), 227 states have call predecessors, (289), 226 states have call successors, (289) [2022-11-18 21:02:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1021 transitions. [2022-11-18 21:02:38,817 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1021 transitions. Word has length 290 [2022-11-18 21:02:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:38,818 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1021 transitions. [2022-11-18 21:02:38,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:02:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1021 transitions. [2022-11-18 21:02:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-18 21:02:38,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:38,825 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:38,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:39,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:02:39,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:39,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1883250610, now seen corresponding path program 5 times [2022-11-18 21:02:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:39,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982614262] [2022-11-18 21:02:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:39,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:39,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:39,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245402251] [2022-11-18 21:02:39,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:02:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:39,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:39,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:02:39,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:02:39,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:39,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 21:02:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-11-18 21:02:39,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:39,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:39,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982614262] [2022-11-18 21:02:39,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:39,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245402251] [2022-11-18 21:02:39,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245402251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:39,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:39,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:02:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196319448] [2022-11-18 21:02:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:39,731 INFO L87 Difference]: Start difference. First operand 664 states and 1021 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:02:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:39,838 INFO L93 Difference]: Finished difference Result 1297 states and 1999 transitions. [2022-11-18 21:02:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:39,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 290 [2022-11-18 21:02:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:39,846 INFO L225 Difference]: With dead ends: 1297 [2022-11-18 21:02:39,846 INFO L226 Difference]: Without dead ends: 671 [2022-11-18 21:02:39,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:39,852 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:39,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3777 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:02:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-18 21:02:39,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 669. [2022-11-18 21:02:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 402 states have (on average 1.263681592039801) internal successors, (508), 407 states have internal predecessors, (508), 228 states have call successors, (228), 33 states have call predecessors, (228), 37 states have return successors, (291), 228 states have call predecessors, (291), 226 states have call successors, (291) [2022-11-18 21:02:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1027 transitions. [2022-11-18 21:02:39,911 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1027 transitions. Word has length 290 [2022-11-18 21:02:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:39,912 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1027 transitions. [2022-11-18 21:02:39,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:02:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1027 transitions. [2022-11-18 21:02:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-18 21:02:39,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:39,916 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:39,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:40,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1749099963, now seen corresponding path program 1 times [2022-11-18 21:02:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:40,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5661440] [2022-11-18 21:02:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:40,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:40,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314831238] [2022-11-18 21:02:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:40,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:40,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:40,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:40,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:02:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:41,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:41,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-11-18 21:02:41,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5661440] [2022-11-18 21:02:41,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:41,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314831238] [2022-11-18 21:02:41,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314831238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:41,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:41,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:02:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200045058] [2022-11-18 21:02:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:02:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:02:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:41,534 INFO L87 Difference]: Start difference. First operand 669 states and 1027 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-18 21:02:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:42,888 INFO L93 Difference]: Finished difference Result 1313 states and 2020 transitions. [2022-11-18 21:02:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:02:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 298 [2022-11-18 21:02:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:42,895 INFO L225 Difference]: With dead ends: 1313 [2022-11-18 21:02:42,895 INFO L226 Difference]: Without dead ends: 687 [2022-11-18 21:02:42,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:02:42,901 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 912 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:42,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 4923 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 21:02:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-18 21:02:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 636. [2022-11-18 21:02:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 373 states have (on average 1.2546916890080428) internal successors, (468), 379 states have internal predecessors, (468), 225 states have call successors, (225), 33 states have call predecessors, (225), 36 states have return successors, (277), 223 states have call predecessors, (277), 223 states have call successors, (277) [2022-11-18 21:02:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 970 transitions. [2022-11-18 21:02:42,953 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 970 transitions. Word has length 298 [2022-11-18 21:02:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 970 transitions. [2022-11-18 21:02:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 10 states have internal predecessors, (122), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2022-11-18 21:02:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 970 transitions. [2022-11-18 21:02:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-18 21:02:42,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:42,958 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:42,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:43,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:43,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash -766814388, now seen corresponding path program 2 times [2022-11-18 21:02:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213631643] [2022-11-18 21:02:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:43,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:43,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464269608] [2022-11-18 21:02:43,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:43,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:43,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:43,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:43,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:02:44,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:44,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:44,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-18 21:02:44,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:44,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213631643] [2022-11-18 21:02:44,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:44,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464269608] [2022-11-18 21:02:44,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464269608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:44,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:44,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:02:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064145102] [2022-11-18 21:02:44,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:02:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:02:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:02:44,749 INFO L87 Difference]: Start difference. First operand 636 states and 970 transitions. Second operand has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-18 21:02:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:45,587 INFO L93 Difference]: Finished difference Result 1148 states and 1748 transitions. [2022-11-18 21:02:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:02:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 313 [2022-11-18 21:02:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:45,593 INFO L225 Difference]: With dead ends: 1148 [2022-11-18 21:02:45,593 INFO L226 Difference]: Without dead ends: 561 [2022-11-18 21:02:45,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:02:45,599 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 911 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 4447 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:45,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 4447 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:02:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-18 21:02:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2022-11-18 21:02:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 328 states have internal predecessors, (399), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (241), 198 states have call predecessors, (241), 196 states have call successors, (241) [2022-11-18 21:02:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 838 transitions. [2022-11-18 21:02:45,642 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 838 transitions. Word has length 313 [2022-11-18 21:02:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:45,644 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 838 transitions. [2022-11-18 21:02:45,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2022-11-18 21:02:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 838 transitions. [2022-11-18 21:02:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-18 21:02:45,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:45,648 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:45,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:45,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1410340921, now seen corresponding path program 1 times [2022-11-18 21:02:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597730695] [2022-11-18 21:02:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:45,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:45,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756008006] [2022-11-18 21:02:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:45,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:45,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:45,987 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:46,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:02:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:47,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 3784 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:47,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-18 21:02:47,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597730695] [2022-11-18 21:02:47,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:47,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756008006] [2022-11-18 21:02:47,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756008006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:02:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25587429] [2022-11-18 21:02:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:02:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:02:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:02:47,376 INFO L87 Difference]: Start difference. First operand 559 states and 838 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-18 21:02:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:48,401 INFO L93 Difference]: Finished difference Result 1063 states and 1593 transitions. [2022-11-18 21:02:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:48,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 344 [2022-11-18 21:02:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:48,407 INFO L225 Difference]: With dead ends: 1063 [2022-11-18 21:02:48,408 INFO L226 Difference]: Without dead ends: 559 [2022-11-18 21:02:48,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:48,412 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 904 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 4234 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:48,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 4234 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:02:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-18 21:02:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-11-18 21:02:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 328 states have internal predecessors, (399), 198 states have call successors, (198), 32 states have call predecessors, (198), 35 states have return successors, (238), 198 states have call predecessors, (238), 196 states have call successors, (238) [2022-11-18 21:02:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 835 transitions. [2022-11-18 21:02:48,454 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 835 transitions. Word has length 344 [2022-11-18 21:02:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:48,455 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 835 transitions. [2022-11-18 21:02:48,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-18 21:02:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 835 transitions. [2022-11-18 21:02:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-18 21:02:48,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:48,459 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 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, 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, 1, 1, 1] [2022-11-18 21:02:48,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:48,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 21:02:48,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -935689784, now seen corresponding path program 2 times [2022-11-18 21:02:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:48,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170773171] [2022-11-18 21:02:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:48,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:48,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638223099] [2022-11-18 21:02:48,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:48,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:48,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:48,785 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:48,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:02:50,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:50,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:50,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:50,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 410 proven. 3 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-11-18 21:02:50,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 50 proven. 12 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2022-11-18 21:02:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:50,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170773171] [2022-11-18 21:02:50,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:50,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638223099] [2022-11-18 21:02:50,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638223099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:50,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:50,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 21:02:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929526998] [2022-11-18 21:02:50,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:02:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:02:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:02:50,904 INFO L87 Difference]: Start difference. First operand 559 states and 835 transitions. Second operand has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-18 21:02:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:52,930 INFO L93 Difference]: Finished difference Result 1088 states and 1633 transitions. [2022-11-18 21:02:52,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:02:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) Word has length 329 [2022-11-18 21:02:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:52,936 INFO L225 Difference]: With dead ends: 1088 [2022-11-18 21:02:52,936 INFO L226 Difference]: Without dead ends: 578 [2022-11-18 21:02:52,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 643 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:02:52,949 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1469 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:52,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 6065 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 21:02:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-18 21:02:52,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 572. [2022-11-18 21:02:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 336 states have (on average 1.2380952380952381) internal successors, (416), 339 states have internal predecessors, (416), 199 states have call successors, (199), 32 states have call predecessors, (199), 35 states have return successors, (239), 200 states have call predecessors, (239), 197 states have call successors, (239) [2022-11-18 21:02:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 854 transitions. [2022-11-18 21:02:52,999 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 854 transitions. Word has length 329 [2022-11-18 21:02:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:53,000 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 854 transitions. [2022-11-18 21:02:53,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.714285714285714) internal successors, (136), 16 states have internal predecessors, (136), 11 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (56), 7 states have call predecessors, (56), 11 states have call successors, (56) [2022-11-18 21:02:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 854 transitions. [2022-11-18 21:02:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-18 21:02:53,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:53,004 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:53,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:02:53,219 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1012022503, now seen corresponding path program 3 times [2022-11-18 21:02:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:53,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993068826] [2022-11-18 21:02:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:53,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:53,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802966184] [2022-11-18 21:02:53,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:02:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:53,388 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:53,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:02:54,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 21:02:54,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:54,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 21:02:54,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-18 21:02:54,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2022-11-18 21:02:55,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:55,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993068826] [2022-11-18 21:02:55,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:55,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802966184] [2022-11-18 21:02:55,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802966184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:55,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:55,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2022-11-18 21:02:55,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770136056] [2022-11-18 21:02:55,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:55,296 INFO L87 Difference]: Start difference. First operand 572 states and 854 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-18 21:02:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:56,083 INFO L93 Difference]: Finished difference Result 1085 states and 1635 transitions. [2022-11-18 21:02:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:56,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 344 [2022-11-18 21:02:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:56,091 INFO L225 Difference]: With dead ends: 1085 [2022-11-18 21:02:56,091 INFO L226 Difference]: Without dead ends: 574 [2022-11-18 21:02:56,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:56,096 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 22 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:56,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4853 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:02:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-18 21:02:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-18 21:02:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 338 states have (on average 1.2366863905325445) internal successors, (418), 340 states have internal predecessors, (418), 199 states have call successors, (199), 33 states have call predecessors, (199), 35 states have return successors, (238), 200 states have call predecessors, (238), 197 states have call successors, (238) [2022-11-18 21:02:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 855 transitions. [2022-11-18 21:02:56,145 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 855 transitions. Word has length 344 [2022-11-18 21:02:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:56,146 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 855 transitions. [2022-11-18 21:02:56,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-18 21:02:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 855 transitions. [2022-11-18 21:02:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-18 21:02:56,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:56,150 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:56,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:02:56,369 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash -184208892, now seen corresponding path program 4 times [2022-11-18 21:02:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:56,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323528885] [2022-11-18 21:02:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:56,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:56,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902378220] [2022-11-18 21:02:56,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:02:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:56,490 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:56,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:02:57,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:02:57,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:57,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:02:57,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-18 21:02:58,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323528885] [2022-11-18 21:02:58,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:02:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902378220] [2022-11-18 21:02:58,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902378220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:58,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:58,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:02:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272507542] [2022-11-18 21:02:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:02:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:02:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:58,058 INFO L87 Difference]: Start difference. First operand 574 states and 855 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-18 21:02:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:59,082 INFO L93 Difference]: Finished difference Result 1117 states and 1668 transitions. [2022-11-18 21:02:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:02:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 359 [2022-11-18 21:02:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:59,090 INFO L225 Difference]: With dead ends: 1117 [2022-11-18 21:02:59,090 INFO L226 Difference]: Without dead ends: 592 [2022-11-18 21:02:59,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:02:59,095 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 258 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 5735 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:02:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-18 21:02:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 558. [2022-11-18 21:02:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 326 states have internal predecessors, (399), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-18 21:02:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 826 transitions. [2022-11-18 21:02:59,150 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 826 transitions. Word has length 359 [2022-11-18 21:02:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:59,151 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 826 transitions. [2022-11-18 21:02:59,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 10 states have internal predecessors, (115), 7 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-18 21:02:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 826 transitions. [2022-11-18 21:02:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 21:02:59,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:59,155 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:59,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-18 21:02:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:02:59,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235649, now seen corresponding path program 1 times [2022-11-18 21:02:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:59,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031439271] [2022-11-18 21:02:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:59,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:02:59,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594112558] [2022-11-18 21:02:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:59,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:59,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:59,542 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:59,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:03:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:00,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 4066 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:03:00,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2022-11-18 21:03:01,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031439271] [2022-11-18 21:03:01,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:01,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594112558] [2022-11-18 21:03:01,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594112558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:01,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:01,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:03:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227944343] [2022-11-18 21:03:01,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:01,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:01,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:03:01,105 INFO L87 Difference]: Start difference. First operand 558 states and 826 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:03:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:01,764 INFO L93 Difference]: Finished difference Result 1119 states and 1687 transitions. [2022-11-18 21:03:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:03:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 374 [2022-11-18 21:03:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:01,771 INFO L225 Difference]: With dead ends: 1119 [2022-11-18 21:03:01,771 INFO L226 Difference]: Without dead ends: 594 [2022-11-18 21:03:01,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:03:01,776 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 23 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:01,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3567 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:03:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-11-18 21:03:01,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 566. [2022-11-18 21:03:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 332 states have (on average 1.2319277108433735) internal successors, (409), 334 states have internal predecessors, (409), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-18 21:03:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 836 transitions. [2022-11-18 21:03:01,832 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 836 transitions. Word has length 374 [2022-11-18 21:03:01,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:01,832 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 836 transitions. [2022-11-18 21:03:01,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:03:01,833 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 836 transitions. [2022-11-18 21:03:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 21:03:01,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:01,836 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:01,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:03:02,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 564327615, now seen corresponding path program 1 times [2022-11-18 21:03:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:02,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569403538] [2022-11-18 21:03:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:02,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897112435] [2022-11-18 21:03:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:02,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:02,194 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:02,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:03:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:03,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:03:03,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2022-11-18 21:03:03,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:03,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569403538] [2022-11-18 21:03:03,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897112435] [2022-11-18 21:03:03,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897112435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:03,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:03,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:03:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248626432] [2022-11-18 21:03:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:03,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:03,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:03,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:03,696 INFO L87 Difference]: Start difference. First operand 566 states and 836 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:03:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:03,784 INFO L93 Difference]: Finished difference Result 1107 states and 1655 transitions. [2022-11-18 21:03:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 374 [2022-11-18 21:03:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:03,792 INFO L225 Difference]: With dead ends: 1107 [2022-11-18 21:03:03,792 INFO L226 Difference]: Without dead ends: 574 [2022-11-18 21:03:03,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:03:03,799 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 3 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2266 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 [2022-11-18 21:03:03,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2266 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:03:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-18 21:03:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 570. [2022-11-18 21:03:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 336 states have (on average 1.2291666666666667) internal successors, (413), 338 states have internal predecessors, (413), 198 states have call successors, (198), 33 states have call predecessors, (198), 34 states have return successors, (229), 198 states have call predecessors, (229), 196 states have call successors, (229) [2022-11-18 21:03:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 840 transitions. [2022-11-18 21:03:03,875 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 840 transitions. Word has length 374 [2022-11-18 21:03:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:03,876 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 840 transitions. [2022-11-18 21:03:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-18 21:03:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 840 transitions. [2022-11-18 21:03:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 21:03:03,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:03,882 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:03,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:04,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:04,097 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1537422269, now seen corresponding path program 1 times [2022-11-18 21:03:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:04,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265709439] [2022-11-18 21:03:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:04,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:04,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:04,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213437458] [2022-11-18 21:03:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:04,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:04,280 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:04,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:03:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:03:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-11-18 21:03:05,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:05,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265709439] [2022-11-18 21:03:05,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:05,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213437458] [2022-11-18 21:03:05,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213437458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:05,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:05,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:03:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979246899] [2022-11-18 21:03:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:03:05,771 INFO L87 Difference]: Start difference. First operand 570 states and 840 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:03:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:06,072 INFO L93 Difference]: Finished difference Result 1162 states and 1724 transitions. [2022-11-18 21:03:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:06,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2022-11-18 21:03:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:06,082 INFO L225 Difference]: With dead ends: 1162 [2022-11-18 21:03:06,083 INFO L226 Difference]: Without dead ends: 644 [2022-11-18 21:03:06,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:03:06,087 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 103 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:06,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 4046 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-18 21:03:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 576. [2022-11-18 21:03:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 339 states have (on average 1.2271386430678466) internal successors, (416), 341 states have internal predecessors, (416), 201 states have call successors, (201), 33 states have call predecessors, (201), 34 states have return successors, (232), 201 states have call predecessors, (232), 199 states have call successors, (232) [2022-11-18 21:03:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2022-11-18 21:03:06,143 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 374 [2022-11-18 21:03:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:06,144 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2022-11-18 21:03:06,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:03:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2022-11-18 21:03:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 21:03:06,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:06,148 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:06,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:06,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:06,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:06,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:06,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1726504129, now seen corresponding path program 1 times [2022-11-18 21:03:06,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:06,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297776596] [2022-11-18 21:03:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:06,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:06,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:06,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324055396] [2022-11-18 21:03:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:06,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:06,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:06,491 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:06,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 21:03:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:07,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:03:07,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-18 21:03:08,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297776596] [2022-11-18 21:03:08,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324055396] [2022-11-18 21:03:08,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324055396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:08,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:08,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:03:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129820859] [2022-11-18 21:03:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:03:08,108 INFO L87 Difference]: Start difference. First operand 576 states and 849 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:03:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:08,397 INFO L93 Difference]: Finished difference Result 1156 states and 1713 transitions. [2022-11-18 21:03:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 374 [2022-11-18 21:03:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:08,405 INFO L225 Difference]: With dead ends: 1156 [2022-11-18 21:03:08,405 INFO L226 Difference]: Without dead ends: 644 [2022-11-18 21:03:08,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:03:08,410 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 95 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:08,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3919 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-11-18 21:03:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2022-11-18 21:03:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 342 states have (on average 1.2251461988304093) internal successors, (419), 344 states have internal predecessors, (419), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (235), 204 states have call predecessors, (235), 202 states have call successors, (235) [2022-11-18 21:03:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 858 transitions. [2022-11-18 21:03:08,468 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 858 transitions. Word has length 374 [2022-11-18 21:03:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:08,469 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 858 transitions. [2022-11-18 21:03:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2022-11-18 21:03:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 858 transitions. [2022-11-18 21:03:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 21:03:08,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:08,473 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:08,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:08,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1836495741, now seen corresponding path program 1 times [2022-11-18 21:03:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:08,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525666359] [2022-11-18 21:03:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:08,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:08,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502668289] [2022-11-18 21:03:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:08,816 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 21:03:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 21:03:10,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-18 21:03:10,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:10,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525666359] [2022-11-18 21:03:10,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:10,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502668289] [2022-11-18 21:03:10,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502668289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:10,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:10,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:03:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632167641] [2022-11-18 21:03:10,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:10,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:03:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:03:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:03:10,338 INFO L87 Difference]: Start difference. First operand 582 states and 858 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-18 21:03:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:10,826 INFO L93 Difference]: Finished difference Result 1129 states and 1668 transitions. [2022-11-18 21:03:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:03:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 374 [2022-11-18 21:03:10,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:10,833 INFO L225 Difference]: With dead ends: 1129 [2022-11-18 21:03:10,833 INFO L226 Difference]: Without dead ends: 585 [2022-11-18 21:03:10,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:03:10,841 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 13 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:10,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3495 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:03:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-18 21:03:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 580. [2022-11-18 21:03:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 340 states have (on average 1.223529411764706) internal successors, (416), 343 states have internal predecessors, (416), 204 states have call successors, (204), 33 states have call predecessors, (204), 34 states have return successors, (234), 203 states have call predecessors, (234), 202 states have call successors, (234) [2022-11-18 21:03:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 854 transitions. [2022-11-18 21:03:10,912 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 854 transitions. Word has length 374 [2022-11-18 21:03:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:10,913 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 854 transitions. [2022-11-18 21:03:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-18 21:03:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 854 transitions. [2022-11-18 21:03:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-18 21:03:10,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:10,919 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:10,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:11,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:11,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:11,136 INFO L85 PathProgramCache]: Analyzing trace with hash -990951825, now seen corresponding path program 1 times [2022-11-18 21:03:11,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:11,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877308439] [2022-11-18 21:03:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:11,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:11,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332852016] [2022-11-18 21:03:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:11,270 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:11,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 21:03:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:12,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 4074 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:03:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-18 21:03:12,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:12,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877308439] [2022-11-18 21:03:12,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:12,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332852016] [2022-11-18 21:03:12,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332852016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:12,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:12,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:03:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171260368] [2022-11-18 21:03:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:12,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:03:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:03:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:03:12,708 INFO L87 Difference]: Start difference. First operand 580 states and 854 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-18 21:03:12,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:12,972 INFO L93 Difference]: Finished difference Result 1098 states and 1617 transitions. [2022-11-18 21:03:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:03:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) Word has length 385 [2022-11-18 21:03:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:12,980 INFO L225 Difference]: With dead ends: 1098 [2022-11-18 21:03:12,980 INFO L226 Difference]: Without dead ends: 574 [2022-11-18 21:03:12,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:03:12,984 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 110 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:12,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 6582 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-18 21:03:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2022-11-18 21:03:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 337 states have (on average 1.2225519287833828) internal successors, (412), 340 states have internal predecessors, (412), 201 states have call successors, (201), 33 states have call predecessors, (201), 34 states have return successors, (231), 200 states have call predecessors, (231), 199 states have call successors, (231) [2022-11-18 21:03:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 844 transitions. [2022-11-18 21:03:13,035 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 844 transitions. Word has length 385 [2022-11-18 21:03:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:13,036 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 844 transitions. [2022-11-18 21:03:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 8 states have internal predecessors, (116), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 6 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-18 21:03:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 844 transitions. [2022-11-18 21:03:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-18 21:03:13,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:13,040 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:13,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 21:03:13,256 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1938618067, now seen corresponding path program 1 times [2022-11-18 21:03:13,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:13,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672726678] [2022-11-18 21:03:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:13,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:13,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:13,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916401916] [2022-11-18 21:03:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:13,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:13,367 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:13,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 21:03:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 21:03:14,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:14,969 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4999 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4999))) is different from true [2022-11-18 21:03:15,217 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 [2022-11-18 21:03:15,270 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 [2022-11-18 21:03:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-11-18 21:03:15,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672726678] [2022-11-18 21:03:15,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:15,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916401916] [2022-11-18 21:03:15,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916401916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:15,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:15,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 21:03:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697139640] [2022-11-18 21:03:15,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:03:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:03:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=120, Unknown=13, NotChecked=22, Total=182 [2022-11-18 21:03:15,334 INFO L87 Difference]: Start difference. First operand 574 states and 844 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 21:03:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:20,162 INFO L93 Difference]: Finished difference Result 1349 states and 2108 transitions. [2022-11-18 21:03:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:03:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 385 [2022-11-18 21:03:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:20,170 INFO L225 Difference]: With dead ends: 1349 [2022-11-18 21:03:20,170 INFO L226 Difference]: Without dead ends: 808 [2022-11-18 21:03:20,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=453, Unknown=25, NotChecked=46, Total=650 [2022-11-18 21:03:20,176 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 402 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 3744 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 7856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3857 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:20,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 5169 Invalid, 7856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 3744 Invalid, 0 Unknown, 3857 Unchecked, 4.3s Time] [2022-11-18 21:03:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-18 21:03:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 588. [2022-11-18 21:03:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 349 states have (on average 1.2206303724928367) internal successors, (426), 351 states have internal predecessors, (426), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-18 21:03:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 894 transitions. [2022-11-18 21:03:20,274 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 894 transitions. Word has length 385 [2022-11-18 21:03:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:20,274 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 894 transitions. [2022-11-18 21:03:20,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 21:03:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 894 transitions. [2022-11-18 21:03:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-18 21:03:20,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:20,281 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:20,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:20,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 21:03:20,487 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1036120973, now seen corresponding path program 1 times [2022-11-18 21:03:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:20,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274156047] [2022-11-18 21:03:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:20,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030041742] [2022-11-18 21:03:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:20,653 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:20,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 21:03:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:21,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:03:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2022-11-18 21:03:22,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:22,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274156047] [2022-11-18 21:03:22,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030041742] [2022-11-18 21:03:22,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030041742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:22,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:22,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:03:22,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589230054] [2022-11-18 21:03:22,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:22,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:22,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:22,009 INFO L87 Difference]: Start difference. First operand 588 states and 894 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-18 21:03:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:22,093 INFO L93 Difference]: Finished difference Result 1148 states and 1816 transitions. [2022-11-18 21:03:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:03:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 385 [2022-11-18 21:03:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:22,100 INFO L225 Difference]: With dead ends: 1148 [2022-11-18 21:03:22,100 INFO L226 Difference]: Without dead ends: 593 [2022-11-18 21:03:22,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:03:22,107 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 7 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2266 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 [2022-11-18 21:03:22,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2266 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:03:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-18 21:03:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2022-11-18 21:03:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 351 states have (on average 1.2193732193732194) internal successors, (428), 353 states have internal predecessors, (428), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-18 21:03:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 896 transitions. [2022-11-18 21:03:22,166 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 896 transitions. Word has length 385 [2022-11-18 21:03:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:22,167 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 896 transitions. [2022-11-18 21:03:22,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-18 21:03:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 896 transitions. [2022-11-18 21:03:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-18 21:03:22,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:22,171 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:22,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 21:03:22,387 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1581067377, now seen corresponding path program 1 times [2022-11-18 21:03:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113217725] [2022-11-18 21:03:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:22,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:22,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700135589] [2022-11-18 21:03:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:22,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:22,506 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:22,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 21:03:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:24,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 4105 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 21:03:24,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2022-11-18 21:03:24,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:24,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:24,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113217725] [2022-11-18 21:03:24,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:24,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700135589] [2022-11-18 21:03:24,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700135589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:24,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:24,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 21:03:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742829350] [2022-11-18 21:03:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:24,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:03:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:03:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:03:24,219 INFO L87 Difference]: Start difference. First operand 590 states and 896 transitions. Second operand has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-18 21:03:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:25,023 INFO L93 Difference]: Finished difference Result 1169 states and 1805 transitions. [2022-11-18 21:03:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:03:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) Word has length 409 [2022-11-18 21:03:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:25,031 INFO L225 Difference]: With dead ends: 1169 [2022-11-18 21:03:25,031 INFO L226 Difference]: Without dead ends: 612 [2022-11-18 21:03:25,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:03:25,038 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 68 mSDsluCounter, 8549 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 9281 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:25,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 9281 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:03:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-18 21:03:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 598. [2022-11-18 21:03:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 359 states have (on average 1.2144846796657383) internal successors, (436), 361 states have internal predecessors, (436), 201 states have call successors, (201), 33 states have call predecessors, (201), 36 states have return successors, (267), 203 states have call predecessors, (267), 199 states have call successors, (267) [2022-11-18 21:03:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 904 transitions. [2022-11-18 21:03:25,100 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 904 transitions. Word has length 409 [2022-11-18 21:03:25,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:25,101 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 904 transitions. [2022-11-18 21:03:25,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.461538461538462) internal successors, (136), 12 states have internal predecessors, (136), 3 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-18 21:03:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 904 transitions. [2022-11-18 21:03:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-18 21:03:25,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:25,105 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:25,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:25,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 21:03:25,329 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1613941936, now seen corresponding path program 1 times [2022-11-18 21:03:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763881048] [2022-11-18 21:03:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:25,440 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:25,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557639970] [2022-11-18 21:03:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:25,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:25,442 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:25,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 21:03:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:26,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 4095 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 21:03:26,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 633 proven. 7 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2022-11-18 21:03:27,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2022-11-18 21:03:28,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:28,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763881048] [2022-11-18 21:03:28,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:28,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557639970] [2022-11-18 21:03:28,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557639970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:28,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:28,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 28 [2022-11-18 21:03:28,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372123725] [2022-11-18 21:03:28,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 21:03:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 21:03:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2022-11-18 21:03:28,577 INFO L87 Difference]: Start difference. First operand 598 states and 904 transitions. Second operand has 28 states, 26 states have (on average 5.730769230769231) internal successors, (149), 19 states have internal predecessors, (149), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-18 21:03:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:30,238 INFO L93 Difference]: Finished difference Result 1190 states and 1843 transitions. [2022-11-18 21:03:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 21:03:30,239 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.730769230769231) internal successors, (149), 19 states have internal predecessors, (149), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) Word has length 403 [2022-11-18 21:03:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:30,244 INFO L225 Difference]: With dead ends: 1190 [2022-11-18 21:03:30,244 INFO L226 Difference]: Without dead ends: 625 [2022-11-18 21:03:30,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 775 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 21:03:30,249 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 79 mSDsluCounter, 18327 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 19075 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 19075 Invalid, 1791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 21:03:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-11-18 21:03:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 609. [2022-11-18 21:03:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 369 states have (on average 1.2113821138211383) internal successors, (447), 370 states have internal predecessors, (447), 201 states have call successors, (201), 33 states have call predecessors, (201), 37 states have return successors, (300), 205 states have call predecessors, (300), 199 states have call successors, (300) [2022-11-18 21:03:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 948 transitions. [2022-11-18 21:03:30,315 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 948 transitions. Word has length 403 [2022-11-18 21:03:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:30,316 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 948 transitions. [2022-11-18 21:03:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.730769230769231) internal successors, (149), 19 states have internal predecessors, (149), 4 states have call successors, (47), 3 states have call predecessors, (47), 9 states have return successors, (51), 10 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-18 21:03:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 948 transitions. [2022-11-18 21:03:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-18 21:03:30,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:30,320 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:30,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:30,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 21:03:30,536 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:30,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash -916907969, now seen corresponding path program 1 times [2022-11-18 21:03:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333036359] [2022-11-18 21:03:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:30,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:30,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681965555] [2022-11-18 21:03:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:30,659 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:30,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 21:03:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:32,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 21:03:32,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:32,343 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6128 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6128))) is different from true [2022-11-18 21:03:32,552 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 [2022-11-18 21:03:32,598 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 [2022-11-18 21:03:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-11-18 21:03:32,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333036359] [2022-11-18 21:03:32,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681965555] [2022-11-18 21:03:32,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681965555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:32,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:32,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 21:03:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308226367] [2022-11-18 21:03:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:32,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:03:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:03:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=123, Unknown=10, NotChecked=22, Total=182 [2022-11-18 21:03:32,653 INFO L87 Difference]: Start difference. First operand 609 states and 948 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 21:03:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:36,301 INFO L93 Difference]: Finished difference Result 1409 states and 2319 transitions. [2022-11-18 21:03:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:03:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 391 [2022-11-18 21:03:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:36,310 INFO L225 Difference]: With dead ends: 1409 [2022-11-18 21:03:36,310 INFO L226 Difference]: Without dead ends: 833 [2022-11-18 21:03:36,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=420, Unknown=21, NotChecked=44, Total=600 [2022-11-18 21:03:36,315 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 408 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 7296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3792 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:36,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 4783 Invalid, 7296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3248 Invalid, 0 Unknown, 3792 Unchecked, 3.2s Time] [2022-11-18 21:03:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-18 21:03:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 610. [2022-11-18 21:03:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 370 states have (on average 1.2108108108108109) internal successors, (448), 371 states have internal predecessors, (448), 201 states have call successors, (201), 33 states have call predecessors, (201), 37 states have return successors, (300), 205 states have call predecessors, (300), 199 states have call successors, (300) [2022-11-18 21:03:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 949 transitions. [2022-11-18 21:03:36,402 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 949 transitions. Word has length 391 [2022-11-18 21:03:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:36,403 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 949 transitions. [2022-11-18 21:03:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 7 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2022-11-18 21:03:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 949 transitions. [2022-11-18 21:03:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-18 21:03:36,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:36,408 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:36,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:36,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 21:03:36,628 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 112990585, now seen corresponding path program 1 times [2022-11-18 21:03:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:36,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561454479] [2022-11-18 21:03:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:36,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:36,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934030064] [2022-11-18 21:03:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:36,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:36,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:36,747 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:36,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 21:03:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:38,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 4113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:03:38,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2022-11-18 21:03:38,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:38,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561454479] [2022-11-18 21:03:38,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:38,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934030064] [2022-11-18 21:03:38,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934030064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:38,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:38,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:03:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105008073] [2022-11-18 21:03:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:38,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:03:38,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:03:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:03:38,404 INFO L87 Difference]: Start difference. First operand 610 states and 949 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-18 21:03:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:39,030 INFO L93 Difference]: Finished difference Result 1201 states and 2032 transitions. [2022-11-18 21:03:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:03:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 391 [2022-11-18 21:03:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:39,038 INFO L225 Difference]: With dead ends: 1201 [2022-11-18 21:03:39,038 INFO L226 Difference]: Without dead ends: 624 [2022-11-18 21:03:39,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:03:39,045 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 16 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:39,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2928 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:03:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-18 21:03:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 612. [2022-11-18 21:03:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 372 states have (on average 1.2096774193548387) internal successors, (450), 373 states have internal predecessors, (450), 201 states have call successors, (201), 33 states have call predecessors, (201), 37 states have return successors, (300), 205 states have call predecessors, (300), 199 states have call successors, (300) [2022-11-18 21:03:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 951 transitions. [2022-11-18 21:03:39,144 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 951 transitions. Word has length 391 [2022-11-18 21:03:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:39,145 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 951 transitions. [2022-11-18 21:03:39,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-18 21:03:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 951 transitions. [2022-11-18 21:03:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-18 21:03:39,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:39,153 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:39,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 21:03:39,363 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:39,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1425549825, now seen corresponding path program 1 times [2022-11-18 21:03:39,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:39,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811882724] [2022-11-18 21:03:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:39,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:39,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712564797] [2022-11-18 21:03:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:39,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:39,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:39,529 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:39,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 21:03:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:41,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-18 21:03:41,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:41,402 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 [2022-11-18 21:03:41,924 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 [2022-11-18 21:03:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:44,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 21:03:46,229 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6754 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_6754) |c_#memory_int|)) is different from true [2022-11-18 21:03:46,545 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6755 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_6755)) |c_#memory_int|)) is different from true [2022-11-18 21:03:46,557 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6755 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_6755)) |c_#memory_int|)) is different from true [2022-11-18 21:03:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:47,324 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:03:47,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 1 [2022-11-18 21:03:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 457 proven. 13 refuted. 0 times theorem prover too weak. 649 trivial. 10 not checked. [2022-11-18 21:03:47,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:48,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811882724] [2022-11-18 21:03:48,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:03:48,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712564797] [2022-11-18 21:03:48,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712564797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:48,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:48,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-11-18 21:03:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188814134] [2022-11-18 21:03:48,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:48,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 21:03:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 21:03:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=611, Unknown=18, NotChecked=156, Total=870 [2022-11-18 21:03:48,192 INFO L87 Difference]: Start difference. First operand 612 states and 951 transitions. Second operand has 29 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 27 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-18 21:03:49,100 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6755 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_6755)) |c_#memory_int|)) (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_6754 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_6754)))))) is different from true [2022-11-18 21:03:56,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:56,933 INFO L93 Difference]: Finished difference Result 1448 states and 2352 transitions. [2022-11-18 21:03:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 21:03:56,934 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 27 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 391 [2022-11-18 21:03:56,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:56,942 INFO L225 Difference]: With dead ends: 1448 [2022-11-18 21:03:56,943 INFO L226 Difference]: Without dead ends: 869 [2022-11-18 21:03:56,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 631 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=133, Invalid=1039, Unknown=34, NotChecked=276, Total=1482 [2022-11-18 21:03:56,948 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 301 mSDsluCounter, 6783 mSDsCounter, 0 mSdLazyCounter, 5760 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 7595 SdHoareTripleChecker+Invalid, 14448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8405 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:56,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 7595 Invalid, 14448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5760 Invalid, 0 Unknown, 8405 Unchecked, 6.0s Time] [2022-11-18 21:03:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-18 21:03:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 658. [2022-11-18 21:03:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 407 states have (on average 1.2088452088452089) internal successors, (492), 410 states have internal predecessors, (492), 205 states have call successors, (205), 37 states have call predecessors, (205), 44 states have return successors, (355), 210 states have call predecessors, (355), 203 states have call successors, (355) [2022-11-18 21:03:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1052 transitions. [2022-11-18 21:03:57,055 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1052 transitions. Word has length 391 [2022-11-18 21:03:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:57,056 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1052 transitions. [2022-11-18 21:03:57,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 27 states have internal predecessors, (148), 12 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-11-18 21:03:57,057 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1052 transitions. [2022-11-18 21:03:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-18 21:03:57,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:57,061 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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] [2022-11-18 21:03:57,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:57,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:57,281 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash -72397883, now seen corresponding path program 1 times [2022-11-18 21:03:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:57,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101697338] [2022-11-18 21:03:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:57,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:57,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:03:57,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222716250] [2022-11-18 21:03:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:57,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:57,407 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:57,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 21:03:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 4103 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-18 21:03:59,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:59,692 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7087 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7089 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7089))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7087)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 21:03:59,718 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7087 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7089 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7087))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7089))))) is different from true [2022-11-18 21:03:59,806 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 21:03:59,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2022-11-18 21:03:59,835 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 21:03:59,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2022-11-18 21:04:00,838 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7093 Int) (v_ArrVal_7092 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7092)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7093))))) is different from true [2022-11-18 21:04:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 679 proven. 52 refuted. 15 times theorem prover too weak. 370 trivial. 19 not checked. [2022-11-18 21:04:11,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:14,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:14,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101697338] [2022-11-18 21:04:14,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:14,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222716250] [2022-11-18 21:04:14,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222716250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:14,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:14,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-11-18 21:04:14,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934467961] [2022-11-18 21:04:14,459 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:14,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 21:04:14,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 21:04:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=557, Unknown=29, NotChecked=150, Total=812 [2022-11-18 21:04:14,461 INFO L87 Difference]: Start difference. First operand 658 states and 1052 transitions. Second operand has 28 states, 25 states have (on average 7.08) internal successors, (177), 27 states have internal predecessors, (177), 14 states have call successors, (43), 4 states have call predecessors, (43), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-11-18 21:04:14,937 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7087 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7089 Int)) (and (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7089))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7087)) |c_#memory_$Pointer$.offset|))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7093 Int) (v_ArrVal_7092 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7092)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7093)))))) is different from true [2022-11-18 21:04:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:24,190 INFO L93 Difference]: Finished difference Result 1752 states and 3103 transitions. [2022-11-18 21:04:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 21:04:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.08) internal successors, (177), 27 states have internal predecessors, (177), 14 states have call successors, (43), 4 states have call predecessors, (43), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) Word has length 393 [2022-11-18 21:04:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:24,208 INFO L225 Difference]: With dead ends: 1752 [2022-11-18 21:04:24,209 INFO L226 Difference]: Without dead ends: 1126 [2022-11-18 21:04:24,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 542 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=130, Invalid=978, Unknown=30, NotChecked=268, Total=1406 [2022-11-18 21:04:24,214 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 412 mSDsluCounter, 8198 mSDsCounter, 0 mSdLazyCounter, 6121 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 9101 SdHoareTripleChecker+Invalid, 15588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 6121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9185 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:24,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 9101 Invalid, 15588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 6121 Invalid, 0 Unknown, 9185 Unchecked, 6.9s Time] [2022-11-18 21:04:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-18 21:04:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 782. [2022-11-18 21:04:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 505 states have (on average 1.201980198019802) internal successors, (607), 512 states have internal predecessors, (607), 217 states have call successors, (217), 44 states have call predecessors, (217), 58 states have return successors, (550), 225 states have call predecessors, (550), 215 states have call successors, (550) [2022-11-18 21:04:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1374 transitions. [2022-11-18 21:04:24,390 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1374 transitions. Word has length 393 [2022-11-18 21:04:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:24,390 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1374 transitions. [2022-11-18 21:04:24,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.08) internal successors, (177), 27 states have internal predecessors, (177), 14 states have call successors, (43), 4 states have call predecessors, (43), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-11-18 21:04:24,391 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1374 transitions. [2022-11-18 21:04:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-11-18 21:04:24,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:24,397 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:24,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:24,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:24,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 523005741, now seen corresponding path program 1 times [2022-11-18 21:04:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:24,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440457330] [2022-11-18 21:04:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:24,732 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:24,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727602421] [2022-11-18 21:04:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:24,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:24,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:24,735 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:24,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 21:04:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:26,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 4114 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:04:26,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-11-18 21:04:26,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440457330] [2022-11-18 21:04:26,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727602421] [2022-11-18 21:04:26,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727602421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:26,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:26,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:04:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653302660] [2022-11-18 21:04:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:04:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:04:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:26,418 INFO L87 Difference]: Start difference. First operand 782 states and 1374 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 21:04:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:27,094 INFO L93 Difference]: Finished difference Result 1481 states and 2676 transitions. [2022-11-18 21:04:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:04:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 419 [2022-11-18 21:04:27,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:27,103 INFO L225 Difference]: With dead ends: 1481 [2022-11-18 21:04:27,103 INFO L226 Difference]: Without dead ends: 784 [2022-11-18 21:04:27,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:27,109 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 10 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:27,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2957 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:04:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-18 21:04:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 781. [2022-11-18 21:04:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 504 states have (on average 1.1944444444444444) internal successors, (602), 511 states have internal predecessors, (602), 217 states have call successors, (217), 44 states have call predecessors, (217), 58 states have return successors, (480), 225 states have call predecessors, (480), 215 states have call successors, (480) [2022-11-18 21:04:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1299 transitions. [2022-11-18 21:04:27,216 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1299 transitions. Word has length 419 [2022-11-18 21:04:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:27,217 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1299 transitions. [2022-11-18 21:04:27,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-18 21:04:27,217 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1299 transitions. [2022-11-18 21:04:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-18 21:04:27,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:27,223 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:27,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:27,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:27,440 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2132450533, now seen corresponding path program 1 times [2022-11-18 21:04:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:27,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34411077] [2022-11-18 21:04:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:27,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:27,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:27,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582295300] [2022-11-18 21:04:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:27,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:27,585 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:27,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 21:04:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 4151 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 21:04:29,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 491 proven. 10 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-18 21:04:29,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 21 proven. 168 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-18 21:04:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34411077] [2022-11-18 21:04:31,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582295300] [2022-11-18 21:04:31,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582295300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:31,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 30 [2022-11-18 21:04:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283464228] [2022-11-18 21:04:31,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 21:04:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:31,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 21:04:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-11-18 21:04:31,254 INFO L87 Difference]: Start difference. First operand 781 states and 1299 transitions. Second operand has 30 states, 26 states have (on average 7.6923076923076925) internal successors, (200), 21 states have internal predecessors, (200), 8 states have call successors, (62), 3 states have call predecessors, (62), 10 states have return successors, (64), 12 states have call predecessors, (64), 7 states have call successors, (64) [2022-11-18 21:04:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:32,733 INFO L93 Difference]: Finished difference Result 1599 states and 2681 transitions. [2022-11-18 21:04:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 21:04:32,734 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 7.6923076923076925) internal successors, (200), 21 states have internal predecessors, (200), 8 states have call successors, (62), 3 states have call predecessors, (62), 10 states have return successors, (64), 12 states have call predecessors, (64), 7 states have call successors, (64) Word has length 407 [2022-11-18 21:04:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:32,742 INFO L225 Difference]: With dead ends: 1599 [2022-11-18 21:04:32,743 INFO L226 Difference]: Without dead ends: 868 [2022-11-18 21:04:32,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 780 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 21:04:32,747 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 32 mSDsluCounter, 15432 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16219 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:32,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 16219 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 21:04:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-18 21:04:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 814. [2022-11-18 21:04:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 534 states have (on average 1.196629213483146) internal successors, (639), 539 states have internal predecessors, (639), 219 states have call successors, (219), 44 states have call predecessors, (219), 59 states have return successors, (498), 230 states have call predecessors, (498), 217 states have call successors, (498) [2022-11-18 21:04:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1356 transitions. [2022-11-18 21:04:32,840 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1356 transitions. Word has length 407 [2022-11-18 21:04:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:32,840 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1356 transitions. [2022-11-18 21:04:32,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 7.6923076923076925) internal successors, (200), 21 states have internal predecessors, (200), 8 states have call successors, (62), 3 states have call predecessors, (62), 10 states have return successors, (64), 12 states have call predecessors, (64), 7 states have call successors, (64) [2022-11-18 21:04:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1356 transitions. [2022-11-18 21:04:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-18 21:04:32,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:32,846 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 5, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 21:04:33,063 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 91931878, now seen corresponding path program 2 times [2022-11-18 21:04:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:33,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425648515] [2022-11-18 21:04:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:33,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495264597] [2022-11-18 21:04:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:04:33,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:33,196 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:33,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 21:04:34,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:04:34,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:04:35,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 4155 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 21:04:35,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 642 proven. 20 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2022-11-18 21:04:35,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 107 proven. 57 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2022-11-18 21:04:37,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425648515] [2022-11-18 21:04:37,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:37,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495264597] [2022-11-18 21:04:37,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495264597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:37,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:37,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 34 [2022-11-18 21:04:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042564887] [2022-11-18 21:04:37,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:37,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 21:04:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 21:04:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 21:04:37,192 INFO L87 Difference]: Start difference. First operand 814 states and 1356 transitions. Second operand has 34 states, 30 states have (on average 6.0) internal successors, (180), 23 states have internal predecessors, (180), 8 states have call successors, (51), 3 states have call predecessors, (51), 11 states have return successors, (56), 14 states have call predecessors, (56), 7 states have call successors, (56) [2022-11-18 21:04:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:39,627 INFO L93 Difference]: Finished difference Result 1558 states and 2610 transitions. [2022-11-18 21:04:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 21:04:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.0) internal successors, (180), 23 states have internal predecessors, (180), 8 states have call successors, (51), 3 states have call predecessors, (51), 11 states have return successors, (56), 14 states have call predecessors, (56), 7 states have call successors, (56) Word has length 413 [2022-11-18 21:04:39,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:39,634 INFO L225 Difference]: With dead ends: 1558 [2022-11-18 21:04:39,634 INFO L226 Difference]: Without dead ends: 843 [2022-11-18 21:04:39,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 788 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 21:04:39,639 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 86 mSDsluCounter, 22806 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 23584 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:39,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 23584 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 21:04:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-18 21:04:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 814. [2022-11-18 21:04:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 534 states have (on average 1.196629213483146) internal successors, (639), 539 states have internal predecessors, (639), 219 states have call successors, (219), 44 states have call predecessors, (219), 59 states have return successors, (496), 230 states have call predecessors, (496), 217 states have call successors, (496) [2022-11-18 21:04:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1354 transitions. [2022-11-18 21:04:39,753 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1354 transitions. Word has length 413 [2022-11-18 21:04:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:39,754 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1354 transitions. [2022-11-18 21:04:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.0) internal successors, (180), 23 states have internal predecessors, (180), 8 states have call successors, (51), 3 states have call predecessors, (51), 11 states have return successors, (56), 14 states have call predecessors, (56), 7 states have call successors, (56) [2022-11-18 21:04:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1354 transitions. [2022-11-18 21:04:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-11-18 21:04:39,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:39,761 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:39,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 21:04:39,976 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 275730625, now seen corresponding path program 1 times [2022-11-18 21:04:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570737526] [2022-11-18 21:04:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:39,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:40,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:40,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697710768] [2022-11-18 21:04:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:40,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:40,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:40,117 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:40,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 21:04:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 21:04:41,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 290 proven. 23 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-11-18 21:04:42,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 112 proven. 13 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2022-11-18 21:04:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570737526] [2022-11-18 21:04:43,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697710768] [2022-11-18 21:04:43,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697710768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:04:43,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:43,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 28 [2022-11-18 21:04:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304472181] [2022-11-18 21:04:43,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 21:04:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:43,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 21:04:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2022-11-18 21:04:43,229 INFO L87 Difference]: Start difference. First operand 814 states and 1354 transitions. Second operand has 28 states, 24 states have (on average 6.083333333333333) internal successors, (146), 19 states have internal predecessors, (146), 6 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (46), 10 states have call predecessors, (46), 5 states have call successors, (46) [2022-11-18 21:04:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:44,928 INFO L93 Difference]: Finished difference Result 1520 states and 2557 transitions. [2022-11-18 21:04:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:04:44,929 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 6.083333333333333) internal successors, (146), 19 states have internal predecessors, (146), 6 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (46), 10 states have call predecessors, (46), 5 states have call successors, (46) Word has length 419 [2022-11-18 21:04:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:44,937 INFO L225 Difference]: With dead ends: 1520 [2022-11-18 21:04:44,937 INFO L226 Difference]: Without dead ends: 822 [2022-11-18 21:04:44,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 806 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=974, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 21:04:44,943 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 79 mSDsluCounter, 16871 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 17621 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:44,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 17621 Invalid, 1613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 21:04:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-18 21:04:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 814. [2022-11-18 21:04:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 534 states have (on average 1.196629213483146) internal successors, (639), 539 states have internal predecessors, (639), 219 states have call successors, (219), 44 states have call predecessors, (219), 59 states have return successors, (493), 230 states have call predecessors, (493), 217 states have call successors, (493) [2022-11-18 21:04:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1351 transitions. [2022-11-18 21:04:45,069 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1351 transitions. Word has length 419 [2022-11-18 21:04:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:45,070 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1351 transitions. [2022-11-18 21:04:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 6.083333333333333) internal successors, (146), 19 states have internal predecessors, (146), 6 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (46), 10 states have call predecessors, (46), 5 states have call successors, (46) [2022-11-18 21:04:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1351 transitions. [2022-11-18 21:04:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-18 21:04:45,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:45,077 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:45,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:45,295 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash 624393752, now seen corresponding path program 1 times [2022-11-18 21:04:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:45,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409496710] [2022-11-18 21:04:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:45,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:04:45,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571719879] [2022-11-18 21:04:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:45,411 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:45,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 21:04:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 4137 conjuncts, 206 conjunts are in the unsatisfiable core [2022-11-18 21:04:47,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:48,033 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8584 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8584))) (exists ((v_ArrVal_8585 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8585))))) is different from true [2022-11-18 21:04:48,059 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8585 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8584 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8584)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8585)))) is different from true [2022-11-18 21:04:48,141 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:04:48,142 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 [2022-11-18 21:04:48,165 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:04:48,165 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 [2022-11-18 21:04:48,176 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 [2022-11-18 21:04:48,179 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 [2022-11-18 21:04:48,198 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 [2022-11-18 21:04:48,202 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 [2022-11-18 21:04:48,398 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8589 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8589))) (exists ((v_ArrVal_8588 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8588) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-18 21:04:49,254 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8590 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_8591 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591))))) is different from true [2022-11-18 21:04:49,275 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8590 (Array Int Int)) (v_ArrVal_8591 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590) |c_#memory_$Pointer$.base|))) is different from true [2022-11-18 21:04:49,345 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8588 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8589 (Array Int Int)) (v_ArrVal_8590 (Array Int Int)) (v_ArrVal_8591 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| v_ArrVal_8588)) (.cse1 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| v_ArrVal_8589)) (.cse2 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (= |c_#memory_$Pointer$.base| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590)) (= (store .cse1 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591) |c_#memory_$Pointer$.offset|) (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select .cse1 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) is different from true [2022-11-18 21:04:49,608 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 21:04:49,609 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 [2022-11-18 21:04:49,649 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 21:04:49,650 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 [2022-11-18 21:04:49,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 21:04:49,730 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 [2022-11-18 21:04:49,822 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 [2022-11-18 21:04:49,905 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8593 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8593))) (exists ((v_ArrVal_8592 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8592) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-18 21:04:50,117 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 [2022-11-18 21:04:50,122 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 [2022-11-18 21:04:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 682 proven. 33 refuted. 0 times theorem prover too weak. 345 trivial. 70 not checked. [2022-11-18 21:04:50,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:52,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409496710] [2022-11-18 21:04:52,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:04:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571719879] [2022-11-18 21:04:52,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571719879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:52,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:52,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-18 21:04:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426601389] [2022-11-18 21:04:52,152 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 21:04:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 21:04:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2180, Unknown=51, NotChecked=700, Total=3080 [2022-11-18 21:04:52,155 INFO L87 Difference]: Start difference. First operand 814 states and 1351 transitions. Second operand has 44 states, 41 states have (on average 4.512195121951219) internal successors, (185), 39 states have internal predecessors, (185), 16 states have call successors, (45), 5 states have call predecessors, (45), 15 states have return successors, (45), 16 states have call predecessors, (45), 16 states have call successors, (45) [2022-11-18 21:04:52,970 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8584 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8584))) (exists ((v_ArrVal_8585 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8585))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8589 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8589))) (exists ((v_ArrVal_8588 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8588) |c_#memory_$Pointer$.base|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8593 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8593))) (exists ((v_ArrVal_8592 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8592) |c_#memory_$Pointer$.offset|)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_8590 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_8591 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591)))))) is different from true [2022-11-18 21:04:53,072 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8590 (Array Int Int)) (v_ArrVal_8591 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_8585 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8584 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8584)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8585))))) is different from true [2022-11-18 21:04:54,084 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8588 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8589 (Array Int Int)) (v_ArrVal_8590 (Array Int Int)) (v_ArrVal_8591 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| v_ArrVal_8588)) (.cse1 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_512| v_ArrVal_8589)) (.cse2 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (= |c_#memory_$Pointer$.base| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8590)) (= (store .cse1 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_8591) |c_#memory_$Pointer$.offset|) (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0) (= (select (select .cse1 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse2) 0)))) (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short862#1|)) is different from true [2022-11-18 21:05:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:07,001 INFO L93 Difference]: Finished difference Result 2052 states and 3692 transitions. [2022-11-18 21:05:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 21:05:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 4.512195121951219) internal successors, (185), 39 states have internal predecessors, (185), 16 states have call successors, (45), 5 states have call predecessors, (45), 15 states have return successors, (45), 16 states have call predecessors, (45), 16 states have call successors, (45) Word has length 397 [2022-11-18 21:05:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:07,017 INFO L225 Difference]: With dead ends: 2052 [2022-11-18 21:05:07,018 INFO L226 Difference]: Without dead ends: 1341 [2022-11-18 21:05:07,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 422 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=390, Invalid=5742, Unknown=70, NotChecked=1630, Total=7832 [2022-11-18 21:05:07,027 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 710 mSDsluCounter, 16195 mSDsCounter, 0 mSdLazyCounter, 13308 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 17074 SdHoareTripleChecker+Invalid, 28431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 13308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14449 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 17074 Invalid, 28431 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [674 Valid, 13308 Invalid, 0 Unknown, 14449 Unchecked, 12.7s Time] [2022-11-18 21:05:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-11-18 21:05:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 835. [2022-11-18 21:05:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 547 states have (on average 1.193784277879342) internal successors, (653), 551 states have internal predecessors, (653), 226 states have call successors, (226), 47 states have call predecessors, (226), 60 states have return successors, (502), 236 states have call predecessors, (502), 224 states have call successors, (502) [2022-11-18 21:05:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1381 transitions. [2022-11-18 21:05:07,183 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1381 transitions. Word has length 397 [2022-11-18 21:05:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1381 transitions. [2022-11-18 21:05:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 4.512195121951219) internal successors, (185), 39 states have internal predecessors, (185), 16 states have call successors, (45), 5 states have call predecessors, (45), 15 states have return successors, (45), 16 states have call predecessors, (45), 16 states have call successors, (45) [2022-11-18 21:05:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1381 transitions. [2022-11-18 21:05:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-18 21:05:07,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:07,189 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:07,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:07,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 21:05:07,403 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1288744610, now seen corresponding path program 1 times [2022-11-18 21:05:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:07,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862977913] [2022-11-18 21:05:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:07,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:05:07,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517259240] [2022-11-18 21:05:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:07,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:07,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:07,516 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:07,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 21:05:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:09,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 4142 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-18 21:05:09,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:09,917 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8945 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8942 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8942)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8945))))) is different from true [2022-11-18 21:05:09,958 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8945 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8942 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8942))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_8945))))) is different from true [2022-11-18 21:05:10,048 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 21:05:10,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-18 21:05:10,081 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 21:05:10,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-18 21:05:11,051 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8949 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8948 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8949)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8948)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-18 21:05:13,501 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 41 treesize of output 33 [2022-11-18 21:05:13,505 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 24 treesize of output 16 [2022-11-18 21:05:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 704 proven. 66 refuted. 15 times theorem prover too weak. 340 trivial. 19 not checked. [2022-11-18 21:05:13,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:15,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:15,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862977913] [2022-11-18 21:05:15,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:05:15,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517259240] [2022-11-18 21:05:15,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517259240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:15,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:05:15,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-11-18 21:05:15,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798480286] [2022-11-18 21:05:15,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:15,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 21:05:15,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 21:05:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1397, Unknown=64, NotChecked=234, Total=1806 [2022-11-18 21:05:15,729 INFO L87 Difference]: Start difference. First operand 835 states and 1381 transitions. Second operand has 34 states, 30 states have (on average 6.3) internal successors, (189), 31 states have internal predecessors, (189), 15 states have call successors, (46), 4 states have call predecessors, (46), 11 states have return successors, (44), 14 states have call predecessors, (44), 15 states have call successors, (44) [2022-11-18 21:05:16,498 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8949 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8948 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8949)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8948)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_8945 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_8942 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8942)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8945)))))) is different from true [2022-11-18 21:05:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:31,120 INFO L93 Difference]: Finished difference Result 2069 states and 3609 transitions. [2022-11-18 21:05:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 21:05:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.3) internal successors, (189), 31 states have internal predecessors, (189), 15 states have call successors, (46), 4 states have call predecessors, (46), 11 states have return successors, (44), 14 states have call predecessors, (44), 15 states have call successors, (44) Word has length 401 [2022-11-18 21:05:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:31,134 INFO L225 Difference]: With dead ends: 2069 [2022-11-18 21:05:31,134 INFO L226 Difference]: Without dead ends: 1300 [2022-11-18 21:05:31,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 538 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=262, Invalid=3447, Unknown=89, NotChecked=492, Total=4290 [2022-11-18 21:05:31,142 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 417 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 8548 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 11984 SdHoareTripleChecker+Invalid, 19093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 8548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10244 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:31,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 11984 Invalid, 19093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [301 Valid, 8548 Invalid, 0 Unknown, 10244 Unchecked, 10.1s Time] [2022-11-18 21:05:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2022-11-18 21:05:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 909. [2022-11-18 21:05:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 603 states have (on average 1.185737976782753) internal successors, (715), 609 states have internal predecessors, (715), 235 states have call successors, (235), 52 states have call predecessors, (235), 69 states have return successors, (563), 247 states have call predecessors, (563), 233 states have call successors, (563) [2022-11-18 21:05:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1513 transitions. [2022-11-18 21:05:31,397 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1513 transitions. Word has length 401 [2022-11-18 21:05:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:31,398 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1513 transitions. [2022-11-18 21:05:31,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.3) internal successors, (189), 31 states have internal predecessors, (189), 15 states have call successors, (46), 4 states have call predecessors, (46), 11 states have return successors, (44), 14 states have call predecessors, (44), 15 states have call successors, (44) [2022-11-18 21:05:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1513 transitions. [2022-11-18 21:05:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-18 21:05:31,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:31,405 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:31,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 21:05:31,625 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1011945117, now seen corresponding path program 3 times [2022-11-18 21:05:31,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:31,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579720620] [2022-11-18 21:05:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:31,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 21:05:31,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578366970] [2022-11-18 21:05:31,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:05:31,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:31,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:31,752 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:31,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8d1821-24fc-4f48-aa39-b3710f70a475/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process