./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:31:07,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:31:07,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:31:07,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:31:07,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:31:07,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:31:07,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:31:07,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:31:07,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:31:07,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:31:07,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:31:07,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:31:07,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:31:07,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:31:07,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:31:07,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:31:07,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:31:07,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:31:07,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:31:07,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:31:07,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:31:07,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:31:07,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:31:07,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:31:07,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:31:07,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:31:07,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:31:07,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:31:07,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:31:07,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:31:07,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:31:07,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:31:07,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:31:07,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:31:07,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:31:07,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:31:07,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:31:07,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:31:07,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:31:07,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:31:07,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:31:07,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:31:07,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:31:07,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:31:07,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:31:07,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:31:07,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:31:07,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:31:07,445 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:31:07,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:31:07,446 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:31:07,446 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:31:07,447 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:31:07,447 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:31:07,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:31:07,448 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:31:07,448 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:31:07,448 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:31:07,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:31:07,449 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:31:07,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:31:07,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:31:07,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:31:07,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:31:07,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:31:07,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:31:07,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:31:07,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:31:07,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:31:07,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:31:07,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:31:07,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:07,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:31:07,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:31:07,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:31:07,455 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-23 03:31:07,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:31:07,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:31:07,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:31:07,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:31:07,849 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:31:07,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-23 03:31:07,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/53cc22cf0/56f03a499e4c491fad05512378488ea3/FLAG16bd9cec6 [2021-11-23 03:31:08,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:31:08,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-23 03:31:09,030 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/53cc22cf0/56f03a499e4c491fad05512378488ea3/FLAG16bd9cec6 [2021-11-23 03:31:09,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/53cc22cf0/56f03a499e4c491fad05512378488ea3 [2021-11-23 03:31:09,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:31:09,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:31:09,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:09,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:31:09,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:31:09,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:09" (1/1) ... [2021-11-23 03:31:09,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a10e744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:09, skipping insertion in model container [2021-11-23 03:31:09,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:09" (1/1) ... [2021-11-23 03:31:09,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:31:09,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:31:09,893 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-23 03:31:09,900 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-23 03:31:11,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,022 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:31:11,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:31:11,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:31:11,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:31:11,496 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:31:11,496 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:31:11,497 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:31:11,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:31:11,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:31:11,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:31:11,669 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:31:11,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,804 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,826 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:11,878 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:31:11,892 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-23 03:31:11,892 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-23 03:31:11,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:11,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:31:12,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:31:12,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:31:12,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:31:12,038 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:31:12,039 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:31:12,040 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:31:12,041 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:31:12,042 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:31:12,042 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:31:12,106 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:31:12,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,224 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:31:12,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:12,506 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:31:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12 WrapperNode [2021-11-23 03:31:12,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:12,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:12,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:31:12,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:31:12,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,700 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2021-11-23 03:31:12,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:12,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:31:12,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:31:12,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:31:12,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:31:12,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:31:12,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:31:12,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:31:12,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (1/1) ... [2021-11-23 03:31:12,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:12,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:31:12,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:31:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-23 03:31:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-23 03:31:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-23 03:31:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-23 03:31:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:31:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-23 03:31:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-23 03:31:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-23 03:31:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-23 03:31:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:31:12,925 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:31:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-23 03:31:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-23 03:31:12,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:31:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:31:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:31:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:31:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:31:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:31:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-23 03:31:12,932 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-23 03:31:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:31:12,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:31:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:31:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-23 03:31:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-23 03:31:12,939 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-23 03:31:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-23 03:31:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:31:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:31:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:31:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:31:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-23 03:31:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-23 03:31:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:31:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-23 03:31:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-23 03:31:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-23 03:31:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-23 03:31:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-23 03:31:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-23 03:31:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:31:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:31:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:31:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:31:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-23 03:31:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-23 03:31:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-23 03:31:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-23 03:31:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:31:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:31:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:31:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-23 03:31:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-23 03:31:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:31:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:31:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-23 03:31:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-23 03:31:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:31:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:31:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:31:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-23 03:31:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-23 03:31:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:31:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:31:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:31:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-23 03:31:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-23 03:31:13,459 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:31:13,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:31:16,242 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:31:16,547 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:31:16,547 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 03:31:16,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:16 BoogieIcfgContainer [2021-11-23 03:31:16,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:31:16,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:31:16,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:31:16,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:31:16,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:31:09" (1/3) ... [2021-11-23 03:31:16,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59267b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:16, skipping insertion in model container [2021-11-23 03:31:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:12" (2/3) ... [2021-11-23 03:31:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59267b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:16, skipping insertion in model container [2021-11-23 03:31:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:16" (3/3) ... [2021-11-23 03:31:16,568 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-23 03:31:16,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:31:16,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:31:16,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:31:16,687 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:31:16,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:31:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-23 03:31:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 03:31:16,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:16,733 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:31:16,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1860970999, now seen corresponding path program 1 times [2021-11-23 03:31:16,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:16,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069953384] [2021-11-23 03:31:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:16,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-23 03:31:17,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:17,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069953384] [2021-11-23 03:31:17,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069953384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:31:17,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381819181] [2021-11-23 03:31:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:17,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:17,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:17,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:17,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:31:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:18,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:31:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 03:31:18,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:18,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381819181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:18,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:31:18,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-23 03:31:18,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410559170] [2021-11-23 03:31:18,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:18,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:31:18,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:31:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:31:18,524 INFO L87 Difference]: Start difference. First operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 03:31:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:21,269 INFO L93 Difference]: Finished difference Result 725 states and 1115 transitions. [2021-11-23 03:31:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:31:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 101 [2021-11-23 03:31:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:21,288 INFO L225 Difference]: With dead ends: 725 [2021-11-23 03:31:21,288 INFO L226 Difference]: Without dead ends: 376 [2021-11-23 03:31:21,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:31:21,300 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 40 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:21,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1782 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:31:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-23 03:31:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-23 03:31:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 191 states have (on average 1.193717277486911) internal successors, (228), 195 states have internal predecessors, (228), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2021-11-23 03:31:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 551 transitions. [2021-11-23 03:31:21,393 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 551 transitions. Word has length 101 [2021-11-23 03:31:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:21,394 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 551 transitions. [2021-11-23 03:31:21,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 03:31:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 551 transitions. [2021-11-23 03:31:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 03:31:21,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:21,401 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:31:21,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:21,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:21,618 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2046021411, now seen corresponding path program 1 times [2021-11-23 03:31:21,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:21,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995292407] [2021-11-23 03:31:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:21,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-23 03:31:22,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995292407] [2021-11-23 03:31:22,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995292407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:31:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267169102] [2021-11-23 03:31:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:22,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:22,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:31:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:31:22,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 03:31:22,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:22,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267169102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:22,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:31:22,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-23 03:31:22,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67467988] [2021-11-23 03:31:22,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:22,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:31:22,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:31:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:31:22,895 INFO L87 Difference]: Start difference. First operand 376 states and 551 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:31:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:26,581 INFO L93 Difference]: Finished difference Result 735 states and 1109 transitions. [2021-11-23 03:31:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:31:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2021-11-23 03:31:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:26,588 INFO L225 Difference]: With dead ends: 735 [2021-11-23 03:31:26,588 INFO L226 Difference]: Without dead ends: 389 [2021-11-23 03:31:26,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:31:26,592 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 55 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:26,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2590 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-23 03:31:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-23 03:31:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2021-11-23 03:31:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-23 03:31:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-23 03:31:26,638 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 109 [2021-11-23 03:31:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:26,638 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-23 03:31:26,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:31:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-23 03:31:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 03:31:26,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:26,643 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-23 03:31:26,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:31:26,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:26,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1869528835, now seen corresponding path program 1 times [2021-11-23 03:31:26,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:26,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109453777] [2021-11-23 03:31:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:26,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:26,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:26,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444344637] [2021-11-23 03:31:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:26,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:26,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:27,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:31:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:27,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:31:27,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 03:31:27,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:27,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:27,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109453777] [2021-11-23 03:31:27,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:27,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444344637] [2021-11-23 03:31:27,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444344637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:27,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:27,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:31:27,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835388878] [2021-11-23 03:31:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:27,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:31:27,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:31:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:31:27,815 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-23 03:31:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:31,650 INFO L93 Difference]: Finished difference Result 752 states and 1170 transitions. [2021-11-23 03:31:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:31:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 118 [2021-11-23 03:31:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:31,657 INFO L225 Difference]: With dead ends: 752 [2021-11-23 03:31:31,657 INFO L226 Difference]: Without dead ends: 395 [2021-11-23 03:31:31,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:31:31,661 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 51 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:31,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 2214 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:31:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-23 03:31:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2021-11-23 03:31:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-23 03:31:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-23 03:31:31,728 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 118 [2021-11-23 03:31:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:31,731 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-23 03:31:31,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-23 03:31:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-23 03:31:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 03:31:31,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:31,745 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 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] [2021-11-23 03:31:31,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:31,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 03:31:31,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2010446515, now seen corresponding path program 1 times [2021-11-23 03:31:31,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:31,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281340937] [2021-11-23 03:31:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:31,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:32,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421468761] [2021-11-23 03:31:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:32,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:32,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:32,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:31:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:32,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:31:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-23 03:31:32,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:32,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:32,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281340937] [2021-11-23 03:31:32,900 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:32,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421468761] [2021-11-23 03:31:32,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421468761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:32,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:32,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:31:32,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296387664] [2021-11-23 03:31:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:32,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:31:32,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:31:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:31:32,903 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-23 03:31:35,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:37,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:40,983 INFO L93 Difference]: Finished difference Result 754 states and 1162 transitions. [2021-11-23 03:31:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:31:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2021-11-23 03:31:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:40,989 INFO L225 Difference]: With dead ends: 754 [2021-11-23 03:31:40,989 INFO L226 Difference]: Without dead ends: 397 [2021-11-23 03:31:40,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:31:40,993 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 74 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:40,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 2989 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 03:31:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-23 03:31:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 387. [2021-11-23 03:31:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-23 03:31:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-23 03:31:41,025 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 126 [2021-11-23 03:31:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:41,026 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-23 03:31:41,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-23 03:31:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-23 03:31:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 03:31:41,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:41,029 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:41,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:41,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:41,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -125786803, now seen corresponding path program 2 times [2021-11-23 03:31:41,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610962117] [2021-11-23 03:31:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:41,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:41,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:41,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070620859] [2021-11-23 03:31:41,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:31:41,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:41,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:41,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:31:42,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 03:31:42,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:31:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:31:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-23 03:31:42,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:42,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:42,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610962117] [2021-11-23 03:31:42,321 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:42,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070620859] [2021-11-23 03:31:42,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070620859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:42,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:42,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:31:42,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421191255] [2021-11-23 03:31:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:42,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:31:42,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:31:42,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:31:42,322 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:31:45,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:46,573 INFO L93 Difference]: Finished difference Result 712 states and 1102 transitions. [2021-11-23 03:31:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:31:46,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 135 [2021-11-23 03:31:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:46,578 INFO L225 Difference]: With dead ends: 712 [2021-11-23 03:31:46,578 INFO L226 Difference]: Without dead ends: 387 [2021-11-23 03:31:46,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:31:46,583 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:46,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1790 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 03:31:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-23 03:31:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-11-23 03:31:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (185), 157 states have call predecessors, (185), 156 states have call successors, (185) [2021-11-23 03:31:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 581 transitions. [2021-11-23 03:31:46,620 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 581 transitions. Word has length 135 [2021-11-23 03:31:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:46,621 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 581 transitions. [2021-11-23 03:31:46,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:31:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 581 transitions. [2021-11-23 03:31:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 03:31:46,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:46,626 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 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] [2021-11-23 03:31:46,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:46,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:46,854 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1818901227, now seen corresponding path program 3 times [2021-11-23 03:31:46,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241136132] [2021-11-23 03:31:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:46,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:46,934 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529343729] [2021-11-23 03:31:46,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:31:46,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:46,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:46,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:31:47,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:31:47,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:31:47,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:31:47,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-23 03:31:47,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-23 03:31:48,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241136132] [2021-11-23 03:31:48,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529343729] [2021-11-23 03:31:48,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529343729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:48,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [59864297] [2021-11-23 03:31:48,230 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-23 03:31:48,230 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:48,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:48,240 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:48,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:51,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:31:51,741 INFO L244 Elim1Store]: Index analysis took 420 ms [2021-11-23 03:32:09,381 WARN L227 SmtUtils]: Spent 17.54s on a formula simplification. DAG size of input: 1767 DAG size of output: 1175 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:32:09,388 INFO L354 Elim1Store]: treesize reduction 1968, result has 47.2 percent of original size [2021-11-23 03:32:09,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19308 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 196 case distinctions, treesize of input 992 treesize of output 2358 [2021-11-23 03:32:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:13,212 INFO L244 Elim1Store]: Index analysis took 1096 ms [2021-11-23 03:32:44,014 WARN L227 SmtUtils]: Spent 30.73s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:32:44,017 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-23 03:32:44,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-23 03:32:45,678 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-23 03:32:45,826 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-23 03:32:46,046 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-23 03:32:47,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 03:32:47,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 55 treesize of output 54 [2021-11-23 03:32:47,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 50 [2021-11-23 03:32:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-23 03:32:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 203 [2021-11-23 03:32:47,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:47,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 203 [2021-11-23 03:32:48,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-11-23 03:32:48,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 03:32:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 03:32:48,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-11-23 03:32:48,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 03:32:48,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:48,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 03:32:49,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:49,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 03:32:50,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-11-23 03:32:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 03:32:50,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 03:32:50,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-11-23 03:32:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 03:32:50,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 671 treesize of output 661 [2021-11-23 03:32:50,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 661 treesize of output 651 [2021-11-23 03:32:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:50,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 651 treesize of output 630 [2021-11-23 03:32:50,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 03:32:51,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:32:51,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:32:51,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2021-11-23 03:32:51,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2021-11-23 03:32:51,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 03:32:51,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 03:32:51,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 03:32:51,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 1 [2021-11-23 03:32:51,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:32:51,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:51,520 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:32:51,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-23 03:32:51,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:32:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:51,606 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:32:51,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-23 03:32:51,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:32:51,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 03:32:51,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 33 [2021-11-23 03:32:51,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2021-11-23 03:32:51,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-11-23 03:32:51,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2021-11-23 03:32:51,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-11-23 03:32:52,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 620 [2021-11-23 03:32:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 620 treesize of output 596 [2021-11-23 03:32:52,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:52,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 568 [2021-11-23 03:32:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 620 [2021-11-23 03:32:53,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 620 treesize of output 596 [2021-11-23 03:32:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:32:53,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 568 [2021-11-23 03:32:55,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 03:32:55,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 03:32:56,725 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-11-23 03:32:56,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 303 treesize of output 313 [2021-11-23 03:32:56,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:32:56,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:56,974 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 03:32:56,979 INFO L158 Benchmark]: Toolchain (without parser) took 107542.58ms. Allocated memory was 100.7MB in the beginning and 371.2MB in the end (delta: 270.5MB). Free memory was 62.5MB in the beginning and 290.0MB in the end (delta: -227.5MB). Peak memory consumption was 263.4MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,979 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:32:56,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3066.41ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 62.2MB in the beginning and 87.3MB in the end (delta: -25.1MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 193.03ms. Allocated memory is still 134.2MB. Free memory was 87.3MB in the beginning and 75.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,980 INFO L158 Benchmark]: Boogie Preprocessor took 114.51ms. Allocated memory is still 134.2MB. Free memory was 75.5MB in the beginning and 67.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,980 INFO L158 Benchmark]: RCFGBuilder took 3735.90ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 67.1MB in the beginning and 50.0MB in the end (delta: 17.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,981 INFO L158 Benchmark]: TraceAbstraction took 100422.98ms. Allocated memory was 163.6MB in the beginning and 371.2MB in the end (delta: 207.6MB). Free memory was 50.0MB in the beginning and 290.0MB in the end (delta: -240.0MB). Peak memory consumption was 186.8MB. Max. memory is 16.1GB. [2021-11-23 03:32:56,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3066.41ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 62.2MB in the beginning and 87.3MB in the end (delta: -25.1MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 193.03ms. Allocated memory is still 134.2MB. Free memory was 87.3MB in the beginning and 75.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.51ms. Allocated memory is still 134.2MB. Free memory was 75.5MB in the beginning and 67.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3735.90ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 67.1MB in the beginning and 50.0MB in the end (delta: 17.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * TraceAbstraction took 100422.98ms. Allocated memory was 163.6MB in the beginning and 371.2MB in the end (delta: 207.6MB). Free memory was 50.0MB in the beginning and 290.0MB in the end (delta: -240.0MB). Peak memory consumption was 186.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 03:32:57,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:32:59,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:32:59,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:32:59,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:32:59,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:32:59,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:32:59,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:32:59,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:32:59,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:32:59,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:32:59,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:32:59,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:32:59,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:32:59,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:32:59,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:32:59,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:32:59,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:32:59,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:32:59,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:32:59,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:32:59,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:32:59,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:32:59,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:32:59,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:32:59,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:32:59,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:32:59,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:32:59,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:32:59,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:32:59,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:32:59,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:32:59,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:32:59,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:32:59,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:32:59,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:32:59,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:32:59,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:32:59,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:32:59,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:32:59,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:32:59,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:32:59,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 03:32:59,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:32:59,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:32:59,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:32:59,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:32:59,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:32:59,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:32:59,477 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:32:59,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:32:59,478 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:32:59,479 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:32:59,480 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:32:59,480 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:32:59,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:32:59,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:32:59,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:32:59,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:32:59,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:32:59,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:32:59,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:32:59,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:32:59,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:32:59,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:32:59,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:32:59,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:32:59,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:32:59,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:32:59,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:59,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:32:59,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:32:59,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:32:59,486 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:32:59,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:32:59,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:32:59,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:32:59,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:32:59,487 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-23 03:32:59,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:32:59,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:32:59,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:32:59,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:32:59,884 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:32:59,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-23 03:32:59,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/2d0bb85c6/a8634d7cd0334c11aebf9eeed6e09151/FLAG7572b2fd5 [2021-11-23 03:33:00,964 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:33:00,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-23 03:33:01,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/2d0bb85c6/a8634d7cd0334c11aebf9eeed6e09151/FLAG7572b2fd5 [2021-11-23 03:33:01,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/data/2d0bb85c6/a8634d7cd0334c11aebf9eeed6e09151 [2021-11-23 03:33:01,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:33:01,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:33:01,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:33:01,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:33:01,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:33:01,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:33:01" (1/1) ... [2021-11-23 03:33:01,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b861cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:01, skipping insertion in model container [2021-11-23 03:33:01,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:33:01" (1/1) ... [2021-11-23 03:33:01,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:33:01,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:33:01,860 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-23 03:33:01,866 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-23 03:33:02,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:02,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:33:03,360 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:33:03,360 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:33:03,362 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:33:03,363 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:33:03,364 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:33:03,364 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:33:03,365 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:33:03,366 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:33:03,366 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:33:03,540 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:33:03,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,652 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,654 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,673 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,674 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:33:03,756 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 03:33:03,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:33:03,795 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-23 03:33:03,796 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-23 03:33:03,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:03,946 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:33:03,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:33:03,948 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:33:03,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:33:03,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:33:03,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:33:03,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:33:03,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:33:03,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:33:03,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:33:04,003 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:33:04,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:33:04,167 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:33:04,192 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-23 03:33:04,192 WARN L230 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_726e5628-1bcb-4570-b529-9ad176f3466d/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-23 03:33:04,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,229 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,310 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:33:04,310 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:33:04,311 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:33:04,312 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:33:04,312 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:33:04,313 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:33:04,314 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:33:04,314 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:33:04,315 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:33:04,315 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:33:04,348 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:33:04,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,375 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,427 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:33:04,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:33:04,799 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:33:04,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04 WrapperNode [2021-11-23 03:33:04,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:33:04,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:33:04,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:33:04,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:33:04,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:04,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,024 INFO L137 Inliner]: procedures = 717, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1015 [2021-11-23 03:33:05,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:33:05,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:33:05,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:33:05,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:33:05,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:33:05,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:33:05,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:33:05,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:33:05,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (1/1) ... [2021-11-23 03:33:05,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:33:05,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:33:05,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:33:05,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:33:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-23 03:33:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-23 03:33:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-23 03:33:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-23 03:33:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:33:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-23 03:33:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-23 03:33:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-23 03:33:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-23 03:33:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:33:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:33:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:33:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 03:33:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-23 03:33:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-23 03:33:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-23 03:33:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:33:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:33:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:33:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:33:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-23 03:33:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-23 03:33:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 03:33:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 03:33:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:33:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:33:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:33:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-23 03:33:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-23 03:33:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-23 03:33:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-23 03:33:05,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:33:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:33:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:33:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:33:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 03:33:05,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 03:33:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-23 03:33:05,317 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-23 03:33:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:33:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-23 03:33:05,317 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-23 03:33:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-23 03:33:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-23 03:33:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-23 03:33:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-23 03:33:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:33:05,318 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:33:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:33:05,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:33:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-23 03:33:05,319 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-23 03:33:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-23 03:33:05,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-23 03:33:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:33:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:33:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 03:33:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:33:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-23 03:33:05,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-23 03:33:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:33:05,321 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:33:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-23 03:33:05,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-23 03:33:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-23 03:33:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:33:05,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-23 03:33:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-23 03:33:05,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-23 03:33:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-23 03:33:05,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-23 03:33:05,731 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:33:05,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:33:10,885 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:33:10,896 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:33:10,896 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-23 03:33:10,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:10 BoogieIcfgContainer [2021-11-23 03:33:10,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:33:10,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:33:10,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:33:10,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:33:10,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:33:01" (1/3) ... [2021-11-23 03:33:10,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262231a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:10, skipping insertion in model container [2021-11-23 03:33:10,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:33:04" (2/3) ... [2021-11-23 03:33:10,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262231a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:33:10, skipping insertion in model container [2021-11-23 03:33:10,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:33:10" (3/3) ... [2021-11-23 03:33:10,907 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-23 03:33:10,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:33:10,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:33:10,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:33:10,969 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:33:10,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:33:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-23 03:33:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 03:33:11,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:11,014 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:11,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1834595556, now seen corresponding path program 1 times [2021-11-23 03:33:11,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471212437] [2021-11-23 03:33:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:11,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:11,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:11,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:33:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:33:11,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-23 03:33:12,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-23 03:33:12,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:12,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471212437] [2021-11-23 03:33:12,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471212437] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:12,589 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:12,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:33:12,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943559252] [2021-11-23 03:33:12,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:33:12,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:33:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:33:12,630 INFO L87 Difference]: Start difference. First operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:33:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:12,741 INFO L93 Difference]: Finished difference Result 875 states and 1391 transitions. [2021-11-23 03:33:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:33:12,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2021-11-23 03:33:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:12,769 INFO L225 Difference]: With dead ends: 875 [2021-11-23 03:33:12,769 INFO L226 Difference]: Without dead ends: 437 [2021-11-23 03:33:12,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:33:12,787 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:12,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:33:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-23 03:33:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-23 03:33:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 253 states have (on average 1.2411067193675889) internal successors, (314), 256 states have internal predecessors, (314), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-23 03:33:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 624 transitions. [2021-11-23 03:33:12,946 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 624 transitions. Word has length 133 [2021-11-23 03:33:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:12,948 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 624 transitions. [2021-11-23 03:33:12,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 03:33:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 624 transitions. [2021-11-23 03:33:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 03:33:12,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:12,960 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:13,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:13,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:13,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 133133086, now seen corresponding path program 1 times [2021-11-23 03:33:13,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:13,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058782732] [2021-11-23 03:33:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:13,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:13,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:13,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:33:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:33:14,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-23 03:33:14,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-23 03:33:15,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:15,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058782732] [2021-11-23 03:33:15,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058782732] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:15,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:15,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-23 03:33:15,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724955192] [2021-11-23 03:33:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:15,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:33:15,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:15,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:33:15,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:33:15,189 INFO L87 Difference]: Start difference. First operand 437 states and 624 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 03:33:17,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:18,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:18,060 INFO L93 Difference]: Finished difference Result 840 states and 1217 transitions. [2021-11-23 03:33:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:33:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2021-11-23 03:33:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:18,068 INFO L225 Difference]: With dead ends: 840 [2021-11-23 03:33:18,068 INFO L226 Difference]: Without dead ends: 439 [2021-11-23 03:33:18,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:33:18,072 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 35 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:18,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2312 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 03:33:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-23 03:33:18,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-23 03:33:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 254 states have (on average 1.2401574803149606) internal successors, (315), 258 states have internal predecessors, (315), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (168), 154 states have call predecessors, (168), 154 states have call successors, (168) [2021-11-23 03:33:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 639 transitions. [2021-11-23 03:33:18,108 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 639 transitions. Word has length 133 [2021-11-23 03:33:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:18,109 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 639 transitions. [2021-11-23 03:33:18,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-23 03:33:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 639 transitions. [2021-11-23 03:33:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-23 03:33:18,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:18,112 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:18,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:18,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:18,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash 74249020, now seen corresponding path program 1 times [2021-11-23 03:33:18,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:18,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314511146] [2021-11-23 03:33:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:18,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:18,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:18,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:18,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:33:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:19,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:33:19,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-23 03:33:19,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-23 03:33:20,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:20,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314511146] [2021-11-23 03:33:20,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314511146] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:20,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:20,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-23 03:33:20,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481515706] [2021-11-23 03:33:20,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:20,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:33:20,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:33:20,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:33:20,900 INFO L87 Difference]: Start difference. First operand 439 states and 639 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:33:23,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:24,780 INFO L93 Difference]: Finished difference Result 863 states and 1290 transitions. [2021-11-23 03:33:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:33:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-11-23 03:33:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:24,787 INFO L225 Difference]: With dead ends: 863 [2021-11-23 03:33:24,787 INFO L226 Difference]: Without dead ends: 460 [2021-11-23 03:33:24,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:33:24,791 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 87 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:24,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3338 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:33:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-23 03:33:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2021-11-23 03:33:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-23 03:33:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-23 03:33:24,834 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 141 [2021-11-23 03:33:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:24,835 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-23 03:33:24,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-23 03:33:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-23 03:33:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-23 03:33:24,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:24,845 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:24,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 03:33:25,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:25,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -782989412, now seen corresponding path program 1 times [2021-11-23 03:33:25,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077871669] [2021-11-23 03:33:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:25,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:25,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:25,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:33:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:26,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:33:26,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-23 03:33:26,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-23 03:33:27,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077871669] [2021-11-23 03:33:27,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077871669] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:27,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:27,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-23 03:33:27,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119608613] [2021-11-23 03:33:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:27,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:33:27,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:33:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:33:27,532 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-23 03:33:30,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:31,055 INFO L93 Difference]: Finished difference Result 888 states and 1365 transitions. [2021-11-23 03:33:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:33:31,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2021-11-23 03:33:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:31,061 INFO L225 Difference]: With dead ends: 888 [2021-11-23 03:33:31,061 INFO L226 Difference]: Without dead ends: 466 [2021-11-23 03:33:31,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:33:31,066 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 58 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:31,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2853 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 03:33:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-23 03:33:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2021-11-23 03:33:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-23 03:33:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-23 03:33:31,101 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 156 [2021-11-23 03:33:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:31,101 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-23 03:33:31,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-23 03:33:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-23 03:33:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 03:33:31,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:31,105 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:31,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:31,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:31,329 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:31,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1549701389, now seen corresponding path program 1 times [2021-11-23 03:33:31,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:31,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234306525] [2021-11-23 03:33:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:31,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:31,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:31,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:33:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:32,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:33:32,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-23 03:33:33,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-23 03:33:34,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:34,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234306525] [2021-11-23 03:33:34,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234306525] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:34,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:34,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-23 03:33:34,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672073143] [2021-11-23 03:33:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:34,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:33:34,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:33:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:33:34,503 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-23 03:33:37,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:39,497 INFO L93 Difference]: Finished difference Result 910 states and 1384 transitions. [2021-11-23 03:33:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:33:39,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2021-11-23 03:33:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:39,504 INFO L225 Difference]: With dead ends: 910 [2021-11-23 03:33:39,504 INFO L226 Difference]: Without dead ends: 488 [2021-11-23 03:33:39,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:33:39,509 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 130 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:39,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 3883 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 03:33:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-23 03:33:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2021-11-23 03:33:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 284 states have internal predecessors, (351), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-23 03:33:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 698 transitions. [2021-11-23 03:33:39,541 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 698 transitions. Word has length 172 [2021-11-23 03:33:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:39,542 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 698 transitions. [2021-11-23 03:33:39,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-23 03:33:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 698 transitions. [2021-11-23 03:33:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:33:39,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:39,547 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:39,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:39,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:39,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354101, now seen corresponding path program 2 times [2021-11-23 03:33:39,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:39,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784374050] [2021-11-23 03:33:39,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:33:39,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:39,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:39,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:39,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:33:41,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:33:41,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:33:41,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:33:41,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:33:43,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-23 03:33:44,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784374050] [2021-11-23 03:33:44,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784374050] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:44,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:44,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-23 03:33:44,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244900546] [2021-11-23 03:33:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:44,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:33:44,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:33:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:33:44,007 INFO L87 Difference]: Start difference. First operand 470 states and 698 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:33:48,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:50,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:52,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:54,689 INFO L93 Difference]: Finished difference Result 940 states and 1458 transitions. [2021-11-23 03:33:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:33:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-23 03:33:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:54,697 INFO L225 Difference]: With dead ends: 940 [2021-11-23 03:33:54,697 INFO L226 Difference]: Without dead ends: 506 [2021-11-23 03:33:54,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:33:54,702 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:54,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2954 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2021-11-23 03:33:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-23 03:33:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 478. [2021-11-23 03:33:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.2534722222222223) internal successors, (361), 292 states have internal predecessors, (361), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-23 03:33:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 708 transitions. [2021-11-23 03:33:54,735 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 708 transitions. Word has length 187 [2021-11-23 03:33:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:54,735 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 708 transitions. [2021-11-23 03:33:54,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:33:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 708 transitions. [2021-11-23 03:33:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:33:54,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:54,739 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:54,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 03:33:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:54,954 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -402596151, now seen corresponding path program 1 times [2021-11-23 03:33:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081410412] [2021-11-23 03:33:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:54,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:54,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:54,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:54,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:33:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:56,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:33:56,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:33:57,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-23 03:33:58,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:33:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081410412] [2021-11-23 03:33:58,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081410412] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:58,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:33:58,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-23 03:33:58,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157068852] [2021-11-23 03:33:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:58,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:33:58,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:33:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:33:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:33:58,615 INFO L87 Difference]: Start difference. First operand 478 states and 708 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:34:04,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:06,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:08,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:10,898 INFO L93 Difference]: Finished difference Result 950 states and 1468 transitions. [2021-11-23 03:34:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:34:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-23 03:34:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:10,907 INFO L225 Difference]: With dead ends: 950 [2021-11-23 03:34:10,907 INFO L226 Difference]: Without dead ends: 508 [2021-11-23 03:34:10,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:34:10,913 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 17 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:10,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3574 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-23 03:34:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-23 03:34:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 482. [2021-11-23 03:34:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 292 states have (on average 1.25) internal successors, (365), 296 states have internal predecessors, (365), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-23 03:34:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 712 transitions. [2021-11-23 03:34:10,947 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 712 transitions. Word has length 187 [2021-11-23 03:34:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:10,948 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 712 transitions. [2021-11-23 03:34:10,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:34:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 712 transitions. [2021-11-23 03:34:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:34:10,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:10,952 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:11,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:11,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:34:11,166 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1545098617, now seen corresponding path program 1 times [2021-11-23 03:34:11,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:11,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82877068] [2021-11-23 03:34:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:11,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:11,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:11,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:34:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:12,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:34:12,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:21,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 28 [2021-11-23 03:34:21,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 03:34:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 03:34:22,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:26,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:34:26,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-23 03:34:26,889 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-23 03:34:26,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 34 [2021-11-23 03:34:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-23 03:34:27,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82877068] [2021-11-23 03:34:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82877068] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:27,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:34:27,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 13 [2021-11-23 03:34:27,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692898550] [2021-11-23 03:34:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:27,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:34:27,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:34:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=125, Unknown=1, NotChecked=0, Total=156 [2021-11-23 03:34:27,233 INFO L87 Difference]: Start difference. First operand 482 states and 712 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-23 03:34:37,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:39,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:41,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:45,609 INFO L93 Difference]: Finished difference Result 964 states and 1483 transitions. [2021-11-23 03:34:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:34:45,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 187 [2021-11-23 03:34:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:45,617 INFO L225 Difference]: With dead ends: 964 [2021-11-23 03:34:45,617 INFO L226 Difference]: Without dead ends: 545 [2021-11-23 03:34:45,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=83, Invalid=294, Unknown=3, NotChecked=0, Total=380 [2021-11-23 03:34:45,622 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 88 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 4575 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:45,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 4575 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 615 Invalid, 3 Unknown, 161 Unchecked, 11.4s Time] [2021-11-23 03:34:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-23 03:34:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 519. [2021-11-23 03:34:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 319 states have (on average 1.2413793103448276) internal successors, (396), 323 states have internal predecessors, (396), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-23 03:34:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2021-11-23 03:34:45,661 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 187 [2021-11-23 03:34:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:45,662 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2021-11-23 03:34:45,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-23 03:34:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2021-11-23 03:34:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 03:34:45,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:45,666 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:45,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:45,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:34:45,882 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 446482249, now seen corresponding path program 1 times [2021-11-23 03:34:45,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:45,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414258215] [2021-11-23 03:34:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:45,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:45,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:45,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:45,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:34:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:47,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:34:47,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-23 03:34:47,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-23 03:34:48,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:48,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414258215] [2021-11-23 03:34:48,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414258215] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:48,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:34:48,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-23 03:34:48,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682738693] [2021-11-23 03:34:48,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:48,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:48,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:48,467 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:34:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:48,691 INFO L93 Difference]: Finished difference Result 997 states and 1547 transitions. [2021-11-23 03:34:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:34:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-23 03:34:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:48,698 INFO L225 Difference]: With dead ends: 997 [2021-11-23 03:34:48,698 INFO L226 Difference]: Without dead ends: 539 [2021-11-23 03:34:48,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:34:48,704 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 8 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:48,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2564 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:34:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-23 03:34:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 527. [2021-11-23 03:34:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 327 states have (on average 1.238532110091743) internal successors, (405), 331 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-23 03:34:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 777 transitions. [2021-11-23 03:34:48,768 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 777 transitions. Word has length 187 [2021-11-23 03:34:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:48,768 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 777 transitions. [2021-11-23 03:34:48,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:34:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 777 transitions. [2021-11-23 03:34:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 03:34:48,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:48,772 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:48,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:48,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:34:48,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 519703029, now seen corresponding path program 1 times [2021-11-23 03:34:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:48,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215505474] [2021-11-23 03:34:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:48,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:48,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:34:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:50,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:34:50,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-23 03:34:51,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-23 03:34:51,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215505474] [2021-11-23 03:34:51,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215505474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:51,916 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:51,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 03:34:51,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405501530] [2021-11-23 03:34:51,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:51,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:34:51,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:34:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:34:51,918 INFO L87 Difference]: Start difference. First operand 527 states and 777 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:34:54,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:54,210 INFO L93 Difference]: Finished difference Result 984 states and 1472 transitions. [2021-11-23 03:34:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:34:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 188 [2021-11-23 03:34:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:54,218 INFO L225 Difference]: With dead ends: 984 [2021-11-23 03:34:54,218 INFO L226 Difference]: Without dead ends: 547 [2021-11-23 03:34:54,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:34:54,223 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 7 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:54,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3737 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:34:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-23 03:34:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2021-11-23 03:34:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 341 states have (on average 1.2375366568914956) internal successors, (422), 345 states have internal predecessors, (422), 166 states have call successors, (166), 32 states have call predecessors, (166), 36 states have return successors, (216), 168 states have call predecessors, (216), 164 states have call successors, (216) [2021-11-23 03:34:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 804 transitions. [2021-11-23 03:34:54,264 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 804 transitions. Word has length 188 [2021-11-23 03:34:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:54,264 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 804 transitions. [2021-11-23 03:34:54,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:34:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 804 transitions. [2021-11-23 03:34:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 03:34:54,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:54,271 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:54,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:54,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:34:54,491 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1395722035, now seen corresponding path program 1 times [2021-11-23 03:34:54,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:34:54,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81970837] [2021-11-23 03:34:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:54,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:34:54,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:34:54,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:34:54,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:34:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:55,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 03:34:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 03:34:56,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-23 03:34:57,694 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:34:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81970837] [2021-11-23 03:34:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81970837] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:57,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:34:57,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-23 03:34:57,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522244192] [2021-11-23 03:34:57,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:57,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:34:57,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:34:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:34:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:34:57,696 INFO L87 Difference]: Start difference. First operand 545 states and 804 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:35:00,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:01,790 INFO L93 Difference]: Finished difference Result 982 states and 1468 transitions. [2021-11-23 03:35:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:35:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 188 [2021-11-23 03:35:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:01,799 INFO L225 Difference]: With dead ends: 982 [2021-11-23 03:35:01,799 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 03:35:01,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:35:01,804 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 8 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:01,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4608 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-23 03:35:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 03:35:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-11-23 03:35:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 329 states have (on average 1.2310030395136777) internal successors, (405), 334 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 35 states have return successors, (210), 164 states have call predecessors, (210), 162 states have call successors, (210) [2021-11-23 03:35:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 779 transitions. [2021-11-23 03:35:01,842 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 779 transitions. Word has length 188 [2021-11-23 03:35:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:01,843 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 779 transitions. [2021-11-23 03:35:01,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:35:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 779 transitions. [2021-11-23 03:35:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 03:35:01,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:01,847 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:01,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:02,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:02,062 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -807170079, now seen corresponding path program 1 times [2021-11-23 03:35:02,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:02,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133398916] [2021-11-23 03:35:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:02,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:02,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:02,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:35:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:03,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:35:03,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 03:35:04,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-23 03:35:05,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:05,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133398916] [2021-11-23 03:35:05,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133398916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:05,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:05,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-23 03:35:05,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186214974] [2021-11-23 03:35:05,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:05,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:35:05,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:05,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:35:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:35:05,107 INFO L87 Difference]: Start difference. First operand 530 states and 779 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-23 03:35:07,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:08,433 INFO L93 Difference]: Finished difference Result 966 states and 1451 transitions. [2021-11-23 03:35:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:35:08,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 199 [2021-11-23 03:35:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:08,441 INFO L225 Difference]: With dead ends: 966 [2021-11-23 03:35:08,441 INFO L226 Difference]: Without dead ends: 532 [2021-11-23 03:35:08,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:35:08,446 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 66 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:08,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 2838 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 03:35:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-23 03:35:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2021-11-23 03:35:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 330 states have (on average 1.2303030303030302) internal successors, (406), 336 states have internal predecessors, (406), 164 states have call successors, (164), 32 states have call predecessors, (164), 36 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2021-11-23 03:35:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 791 transitions. [2021-11-23 03:35:08,481 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 791 transitions. Word has length 199 [2021-11-23 03:35:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:08,481 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 791 transitions. [2021-11-23 03:35:08,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-23 03:35:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 791 transitions. [2021-11-23 03:35:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 03:35:08,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:08,486 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:08,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:08,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:08,701 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1196534915, now seen corresponding path program 1 times [2021-11-23 03:35:08,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:08,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529258007] [2021-11-23 03:35:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:08,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:08,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:08,705 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:08,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:35:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:10,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:35:10,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-23 03:35:11,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-23 03:35:12,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:12,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529258007] [2021-11-23 03:35:12,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529258007] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:12,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:35:12,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2021-11-23 03:35:12,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075375583] [2021-11-23 03:35:12,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:12,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:35:12,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:35:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:35:12,824 INFO L87 Difference]: Start difference. First operand 532 states and 791 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-23 03:35:16,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:17,871 INFO L93 Difference]: Finished difference Result 998 states and 1512 transitions. [2021-11-23 03:35:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:35:17,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) Word has length 207 [2021-11-23 03:35:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:17,879 INFO L225 Difference]: With dead ends: 998 [2021-11-23 03:35:17,879 INFO L226 Difference]: Without dead ends: 562 [2021-11-23 03:35:17,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:35:17,884 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 118 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:17,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 3828 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 404 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 03:35:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-23 03:35:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2021-11-23 03:35:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 357 states have (on average 1.2352941176470589) internal successors, (441), 362 states have internal predecessors, (441), 165 states have call successors, (165), 32 states have call predecessors, (165), 36 states have return successors, (222), 166 states have call predecessors, (222), 163 states have call successors, (222) [2021-11-23 03:35:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 828 transitions. [2021-11-23 03:35:17,924 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 828 transitions. Word has length 207 [2021-11-23 03:35:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:17,925 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 828 transitions. [2021-11-23 03:35:17,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-23 03:35:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 828 transitions. [2021-11-23 03:35:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-23 03:35:17,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:17,928 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:17,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:18,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:18,142 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:18,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1706346939, now seen corresponding path program 2 times [2021-11-23 03:35:18,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:18,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804749930] [2021-11-23 03:35:18,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:35:18,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:18,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:18,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:35:20,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:35:20,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:35:20,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 03:35:20,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-23 03:35:21,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-23 03:35:23,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:23,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804749930] [2021-11-23 03:35:23,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804749930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:23,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:23,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 10 [2021-11-23 03:35:23,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846044843] [2021-11-23 03:35:23,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:23,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:35:23,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:35:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:35:23,804 INFO L87 Difference]: Start difference. First operand 560 states and 828 transitions. Second operand has 10 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 8 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-23 03:35:26,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:29,133 INFO L93 Difference]: Finished difference Result 1032 states and 1575 transitions. [2021-11-23 03:35:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:35:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 8 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 222 [2021-11-23 03:35:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:29,141 INFO L225 Difference]: With dead ends: 1032 [2021-11-23 03:35:29,141 INFO L226 Difference]: Without dead ends: 568 [2021-11-23 03:35:29,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:35:29,147 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 99 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:29,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 5027 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 454 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:35:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-23 03:35:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 560. [2021-11-23 03:35:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 357 states have (on average 1.2352941176470589) internal successors, (441), 362 states have internal predecessors, (441), 165 states have call successors, (165), 32 states have call predecessors, (165), 36 states have return successors, (222), 166 states have call predecessors, (222), 163 states have call successors, (222) [2021-11-23 03:35:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 828 transitions. [2021-11-23 03:35:29,240 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 828 transitions. Word has length 222 [2021-11-23 03:35:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:29,241 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 828 transitions. [2021-11-23 03:35:29,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 10 states have internal predecessors, (99), 8 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2021-11-23 03:35:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 828 transitions. [2021-11-23 03:35:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-23 03:35:29,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:29,244 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:29,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:29,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:29,445 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:29,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1881400440, now seen corresponding path program 1 times [2021-11-23 03:35:29,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090792669] [2021-11-23 03:35:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:29,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:29,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:35:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:31,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:35:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-23 03:35:32,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-23 03:35:34,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:34,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090792669] [2021-11-23 03:35:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090792669] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:34,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:35:34,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2021-11-23 03:35:34,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692486974] [2021-11-23 03:35:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:34,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:35:34,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:35:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:35:34,432 INFO L87 Difference]: Start difference. First operand 560 states and 828 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-23 03:35:38,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:40,905 INFO L93 Difference]: Finished difference Result 1026 states and 1546 transitions. [2021-11-23 03:35:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:35:40,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 238 [2021-11-23 03:35:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:40,916 INFO L225 Difference]: With dead ends: 1026 [2021-11-23 03:35:40,916 INFO L226 Difference]: Without dead ends: 562 [2021-11-23 03:35:40,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:35:40,925 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 161 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:40,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 4367 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 03:35:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-23 03:35:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 530. [2021-11-23 03:35:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 329 states have (on average 1.2310030395136777) internal successors, (405), 334 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 35 states have return successors, (207), 164 states have call predecessors, (207), 162 states have call successors, (207) [2021-11-23 03:35:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 776 transitions. [2021-11-23 03:35:40,964 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 776 transitions. Word has length 238 [2021-11-23 03:35:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:40,966 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 776 transitions. [2021-11-23 03:35:40,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-23 03:35:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 776 transitions. [2021-11-23 03:35:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-23 03:35:40,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:40,970 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:41,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:41,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:41,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:41,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2073342888, now seen corresponding path program 2 times [2021-11-23 03:35:41,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:41,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119982632] [2021-11-23 03:35:41,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 03:35:41,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:41,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:41,199 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:41,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:35:43,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 03:35:43,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:35:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:35:44,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-23 03:35:45,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-23 03:35:46,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:35:46,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119982632] [2021-11-23 03:35:46,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119982632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:46,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:35:46,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-23 03:35:46,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228544898] [2021-11-23 03:35:46,446 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:46,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:35:46,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:35:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:35:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:35:46,448 INFO L87 Difference]: Start difference. First operand 530 states and 776 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) [2021-11-23 03:35:49,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:35:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:50,900 INFO L93 Difference]: Finished difference Result 970 states and 1441 transitions. [2021-11-23 03:35:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:35:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) Word has length 253 [2021-11-23 03:35:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:50,906 INFO L225 Difference]: With dead ends: 970 [2021-11-23 03:35:50,906 INFO L226 Difference]: Without dead ends: 542 [2021-11-23 03:35:50,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:35:50,910 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 107 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 4564 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:50,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 4564 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 333 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 03:35:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-23 03:35:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-11-23 03:35:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 335 states have (on average 1.2298507462686568) internal successors, (412), 340 states have internal predecessors, (412), 169 states have call successors, (169), 33 states have call predecessors, (169), 36 states have return successors, (212), 169 states have call predecessors, (212), 167 states have call successors, (212) [2021-11-23 03:35:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 793 transitions. [2021-11-23 03:35:50,941 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 793 transitions. Word has length 253 [2021-11-23 03:35:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:50,942 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 793 transitions. [2021-11-23 03:35:50,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) [2021-11-23 03:35:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 793 transitions. [2021-11-23 03:35:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-23 03:35:50,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:50,946 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:51,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:51,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:35:51,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash -669863688, now seen corresponding path program 1 times [2021-11-23 03:35:51,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:35:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200784992] [2021-11-23 03:35:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:51,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:35:51,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:35:51,165 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:35:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:35:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:56,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:35:56,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:57,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 13 [2021-11-23 03:35:57,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 03:35:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-23 03:35:59,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:18,963 WARN L227 SmtUtils]: Spent 2.31m on a formula simplification. DAG size of input: 72 DAG size of output: 64 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:38:22,660 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:38:22,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-23 03:38:22,739 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-23 03:38:22,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 34 [2021-11-23 03:38:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-23 03:38:23,090 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200784992] [2021-11-23 03:38:23,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200784992] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:23,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:38:23,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 17 [2021-11-23 03:38:23,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149425034] [2021-11-23 03:38:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:23,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:38:23,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:38:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:38:23,092 INFO L87 Difference]: Start difference. First operand 542 states and 793 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-23 03:38:29,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:32,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:38:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:39,872 INFO L93 Difference]: Finished difference Result 1107 states and 1694 transitions. [2021-11-23 03:38:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:38:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 283 [2021-11-23 03:38:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:39,880 INFO L225 Difference]: With dead ends: 1107 [2021-11-23 03:38:39,880 INFO L226 Difference]: Without dead ends: 606 [2021-11-23 03:38:39,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:38:39,886 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 110 mSDsluCounter, 6015 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:39,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 6594 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1435 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-23 03:38:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-23 03:38:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 568. [2021-11-23 03:38:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 364 states have internal predecessors, (444), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-23 03:38:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 844 transitions. [2021-11-23 03:38:39,923 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 844 transitions. Word has length 283 [2021-11-23 03:38:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:39,924 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 844 transitions. [2021-11-23 03:38:39,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-23 03:38:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 844 transitions. [2021-11-23 03:38:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-23 03:38:39,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:39,928 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:40,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:40,142 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash -575082312, now seen corresponding path program 1 times [2021-11-23 03:38:40,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:40,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569253504] [2021-11-23 03:38:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:40,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:40,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:40,145 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:40,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:38:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:41,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:41,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-23 03:38:43,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-23 03:38:43,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569253504] [2021-11-23 03:38:43,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569253504] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:43,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:38:43,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-23 03:38:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279357192] [2021-11-23 03:38:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:43,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:43,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:38:43,868 INFO L87 Difference]: Start difference. First operand 568 states and 844 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:38:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:44,025 INFO L93 Difference]: Finished difference Result 1106 states and 1731 transitions. [2021-11-23 03:38:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:38:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 283 [2021-11-23 03:38:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:44,039 INFO L225 Difference]: With dead ends: 1106 [2021-11-23 03:38:44,039 INFO L226 Difference]: Without dead ends: 574 [2021-11-23 03:38:44,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:38:44,047 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 7 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:44,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1861 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-23 03:38:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2021-11-23 03:38:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 364 states have internal predecessors, (442), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-23 03:38:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 842 transitions. [2021-11-23 03:38:44,082 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 842 transitions. Word has length 283 [2021-11-23 03:38:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:44,083 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 842 transitions. [2021-11-23 03:38:44,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:38:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 842 transitions. [2021-11-23 03:38:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-23 03:38:44,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:44,086 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:44,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:44,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:44,310 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1640937912, now seen corresponding path program 1 times [2021-11-23 03:38:44,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:44,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96865570] [2021-11-23 03:38:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:44,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:44,314 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:44,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:38:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:46,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:38:46,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-23 03:38:47,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-23 03:38:48,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96865570] [2021-11-23 03:38:48,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96865570] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:48,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:38:48,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 03:38:48,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067390911] [2021-11-23 03:38:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:48,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:38:48,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:48,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:38:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:38:48,211 INFO L87 Difference]: Start difference. First operand 568 states and 842 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:38:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:48,486 INFO L93 Difference]: Finished difference Result 1083 states and 1663 transitions. [2021-11-23 03:38:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:38:48,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2021-11-23 03:38:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:48,495 INFO L225 Difference]: With dead ends: 1083 [2021-11-23 03:38:48,495 INFO L226 Difference]: Without dead ends: 573 [2021-11-23 03:38:48,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:38:48,501 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 7 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:48,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1839 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:38:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-23 03:38:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2021-11-23 03:38:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 360 states have (on average 1.2305555555555556) internal successors, (443), 365 states have internal predecessors, (443), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-23 03:38:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 843 transitions. [2021-11-23 03:38:48,538 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 843 transitions. Word has length 291 [2021-11-23 03:38:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:48,538 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 843 transitions. [2021-11-23 03:38:48,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 03:38:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 843 transitions. [2021-11-23 03:38:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-23 03:38:48,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:48,542 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:48,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:48,766 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:48,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash 129001201, now seen corresponding path program 1 times [2021-11-23 03:38:48,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856852174] [2021-11-23 03:38:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:48,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:48,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:48,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:38:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:38:50,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-23 03:38:52,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-11-23 03:38:53,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:38:53,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856852174] [2021-11-23 03:38:53,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856852174] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:53,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:38:53,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-11-23 03:38:53,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830199749] [2021-11-23 03:38:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:53,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:38:53,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:38:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:38:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:38:53,500 INFO L87 Difference]: Start difference. First operand 569 states and 843 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:38:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:55,939 INFO L93 Difference]: Finished difference Result 1091 states and 1664 transitions. [2021-11-23 03:38:55,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:38:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 291 [2021-11-23 03:38:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:55,946 INFO L225 Difference]: With dead ends: 1091 [2021-11-23 03:38:55,947 INFO L226 Difference]: Without dead ends: 583 [2021-11-23 03:38:55,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:38:55,952 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 4 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:55,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5312 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:38:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-23 03:38:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 576. [2021-11-23 03:38:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 365 states have (on average 1.2273972602739727) internal successors, (448), 371 states have internal predecessors, (448), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-23 03:38:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 867 transitions. [2021-11-23 03:38:55,987 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 867 transitions. Word has length 291 [2021-11-23 03:38:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:55,988 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 867 transitions. [2021-11-23 03:38:55,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:38:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 867 transitions. [2021-11-23 03:38:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-23 03:38:55,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:55,991 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:56,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:56,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:38:56,211 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2062563256, now seen corresponding path program 1 times [2021-11-23 03:38:56,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:38:56,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115788545] [2021-11-23 03:38:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:56,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:38:56,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:38:56,215 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:38:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:38:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:58,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:38:58,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-23 03:38:59,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:39:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-23 03:39:00,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:39:00,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115788545] [2021-11-23 03:39:00,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115788545] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:39:00,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:39:00,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-23 03:39:00,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741316608] [2021-11-23 03:39:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:00,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:39:00,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:39:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:39:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:39:00,686 INFO L87 Difference]: Start difference. First operand 576 states and 867 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:39:04,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:06,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:39:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:08,685 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2021-11-23 03:39:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:39:08,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2021-11-23 03:39:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:08,697 INFO L225 Difference]: With dead ends: 1130 [2021-11-23 03:39:08,697 INFO L226 Difference]: Without dead ends: 590 [2021-11-23 03:39:08,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:39:08,703 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 15 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:08,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2384 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-23 03:39:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-23 03:39:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 578. [2021-11-23 03:39:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 367 states have (on average 1.2261580381471389) internal successors, (450), 373 states have internal predecessors, (450), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-23 03:39:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 869 transitions. [2021-11-23 03:39:08,744 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 869 transitions. Word has length 287 [2021-11-23 03:39:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:08,745 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 869 transitions. [2021-11-23 03:39:08,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:39:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 869 transitions. [2021-11-23 03:39:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-23 03:39:08,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:08,749 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:08,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:39:08,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:39:08,974 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:39:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 181413624, now seen corresponding path program 1 times [2021-11-23 03:39:08,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:39:08,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234990046] [2021-11-23 03:39:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:08,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:39:08,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:39:08,978 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:39:08,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_726e5628-1bcb-4570-b529-9ad176f3466d/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 03:39:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:15,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 03:39:15,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:39:17,130 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-23 03:39:17,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2021-11-23 03:39:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-23 03:39:18,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:40:47,995 WARN L227 SmtUtils]: Spent 1.48m on a formula simplification. DAG size of input: 101 DAG size of output: 93 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:41:03,827 WARN L227 SmtUtils]: Spent 14.07s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 03:41:03,833 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-23 03:41:03,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771